diff --git a/poetry.lock b/poetry.lock
index 45f3910..2a34979 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,36 +1,34 @@
 [[package]]
-category = "dev"
-description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 name = "appdirs"
+version = "1.4.3"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.3"
 
 [[package]]
-category = "dev"
-description = "Disable App Nap on OS X 10.9"
-marker = "sys_platform == \"darwin\" or platform_system == \"Darwin\" or python_version >= \"3.3\" and sys_platform == \"darwin\""
 name = "appnope"
+version = "0.1.0"
+description = "Disable App Nap on OS X 10.9"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
 
 [[package]]
-category = "dev"
-description = "Atomic file writes."
-marker = "sys_platform == \"win32\""
 name = "atomicwrites"
+version = "1.3.0"
+description = "Atomic file writes."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.3.0"
 
 [[package]]
-category = "dev"
-description = "Classes Without Boilerplate"
 name = "attrs"
+version = "19.3.0"
+description = "Classes Without Boilerplate"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
 
 [package.extras]
 azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
@@ -39,20 +37,20 @@ docs = ["sphinx", "zope.interface"]
 tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 
 [[package]]
-category = "dev"
-description = "Specifications for callback functions passed in to an API"
 name = "backcall"
+version = "0.1.0"
+description = "Specifications for callback functions passed in to an API"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
 
 [[package]]
-category = "dev"
-description = "The uncompromising code formatter."
 name = "black"
+version = "19.10b0"
+description = "The uncompromising code formatter."
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "19.10b0"
 
 [package.dependencies]
 appdirs = "*"
@@ -67,65 +65,64 @@ typed-ast = ">=1.4.0"
 d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
 [[package]]
-category = "dev"
-description = "An easy safelist-based HTML-sanitizing tool."
 name = "bleach"
+version = "3.1.0"
+description = "An easy safelist-based HTML-sanitizing tool."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.1.0"
 
 [package.dependencies]
 six = ">=1.9.0"
 webencodings = "*"
 
 [[package]]
-category = "dev"
-description = "Composable command line interface toolkit"
 name = "click"
+version = "7.0"
+description = "Composable command line interface toolkit"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "7.0"
 
 [[package]]
-category = "dev"
-description = "Cross-platform colored terminal text."
-marker = "python_version >= \"3.3\" and sys_platform == \"win32\" or sys_platform == \"win32\""
 name = "colorama"
+version = "0.4.3"
+description = "Cross-platform colored terminal text."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
 
 [[package]]
-category = "dev"
-description = "Decorators for Humans"
 name = "decorator"
+version = "4.4.1"
+description = "Decorators for Humans"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "4.4.1"
 
 [[package]]
-category = "dev"
-description = "XML bomb protection for Python stdlib modules"
 name = "defusedxml"
+version = "0.6.0"
+description = "XML bomb protection for Python stdlib modules"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.6.0"
 
 [[package]]
-category = "dev"
-description = "Discover and load entry points from installed packages."
 name = "entrypoints"
+version = "0.3"
+description = "Discover and load entry points from installed packages."
+category = "dev"
 optional = false
 python-versions = ">=2.7"
-version = "0.3"
 
 [[package]]
-category = "dev"
-description = "the modular source code checker: pep8, pyflakes and co"
 name = "flake8"
+version = "3.7.9"
+description = "the modular source code checker: pep8, pyflakes and co"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.7.9"
 
 [package.dependencies]
 entrypoints = ">=0.3.0,<0.4.0"
@@ -134,31 +131,30 @@ pycodestyle = ">=2.5.0,<2.6.0"
 pyflakes = ">=2.1.0,<2.2.0"
 
 [[package]]
-category = "dev"
-description = "Read metadata from Python packages"
-marker = "python_version < \"3.8\""
 name = "importlib-metadata"
+version = "1.5.0"
+description = "Read metadata from Python packages"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.5.0"
 
 [package.dependencies]
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "rst.linker"]
-testing = ["packaging", "importlib-resources"]
+testing = ["importlib-resources", "packaging"]
+docs = ["rst.linker", "sphinx"]
 
 [[package]]
-category = "dev"
-description = "IPython Kernel for Jupyter"
 name = "ipykernel"
+version = "5.1.4"
+description = "IPython Kernel for Jupyter"
+category = "dev"
 optional = false
 python-versions = ">=3.4"
-version = "5.1.4"
 
 [package.dependencies]
-appnope = "*"
+appnope = {version = "*", markers = "platform_system == \"Darwin\""}
 ipython = ">=5.0.0"
 jupyter-client = "*"
 tornado = ">=4.2"
@@ -168,24 +164,23 @@ traitlets = ">=4.1.0"
 test = ["pytest", "pytest-cov", "flaky", "nose"]
 
 [[package]]
-category = "dev"
-description = "IPython: Productive Interactive Computing"
 name = "ipython"
+version = "7.12.0"
+description = "IPython: Productive Interactive Computing"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "7.12.0"
 
 [package.dependencies]
-appnope = "*"
+appnope = {version = "*", markers = "sys_platform == \"darwin\""}
 backcall = "*"
-colorama = "*"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
 decorator = "*"
 jedi = ">=0.10"
-pexpect = "*"
+pexpect = {version = "*", markers = "sys_platform != \"win32\""}
 pickleshare = "*"
 prompt-toolkit = ">=2.0.0,<3.0.0 || >3.0.0,<3.0.1 || >3.0.1,<3.1.0"
 pygments = "*"
-setuptools = ">=18.5"
 traitlets = ">=4.2"
 
 [package.extras]
@@ -200,56 +195,53 @@ qtconsole = ["qtconsole"]
 test = ["nose (>=0.10.1)", "requests", "testpath", "pygments", "nbformat", "ipykernel", "numpy (>=1.14)"]
 
 [[package]]
-category = "dev"
-description = "Vestigial utilities from IPython"
 name = "ipython-genutils"
+version = "0.2.0"
+description = "Vestigial utilities from IPython"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.2.0"
 
 [[package]]
-category = "dev"
-description = "IPython HTML widgets for Jupyter"
 name = "ipywidgets"
+version = "7.5.1"
+description = "IPython HTML widgets for Jupyter"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "7.5.1"
 
 [package.dependencies]
 ipykernel = ">=4.5.1"
+ipython = {version = ">=4.0.0", markers = "python_version >= \"3.3\""}
 nbformat = ">=4.2.0"
 traitlets = ">=4.3.1"
 widgetsnbextension = ">=3.5.0,<3.6.0"
 
-[package.dependencies.ipython]
-python = ">=3.3"
-version = ">=4.0.0"
-
 [package.extras]
 test = ["pytest (>=3.6.0)", "pytest-cov", "mock"]
 
 [[package]]
-category = "dev"
-description = "An autocompletion tool for Python that can be used for text editors."
 name = "jedi"
+version = "0.16.0"
+description = "An autocompletion tool for Python that can be used for text editors."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.16.0"
 
 [package.dependencies]
 parso = ">=0.5.2"
 
 [package.extras]
-qa = ["flake8 (3.7.9)"]
-testing = ["colorama (0.4.1)", "docopt", "pytest (>=3.9.0,<5.0.0)"]
+qa = ["flake8 (==3.7.9)"]
+testing = ["colorama (==0.4.1)", "docopt", "pytest (>=3.9.0,<5.0.0)"]
 
 [[package]]
-category = "dev"
-description = "A very fast and expressive template engine."
 name = "jinja2"
+version = "2.11.1"
+description = "A very fast and expressive template engine."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.11.1"
 
 [package.dependencies]
 MarkupSafe = ">=0.23"
@@ -258,34 +250,30 @@ MarkupSafe = ">=0.23"
 i18n = ["Babel (>=0.8)"]
 
 [[package]]
-category = "dev"
-description = "An implementation of JSON Schema validation for Python"
 name = "jsonschema"
+version = "3.2.0"
+description = "An implementation of JSON Schema validation for Python"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "3.2.0"
 
 [package.dependencies]
 attrs = ">=17.4.0"
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 pyrsistent = ">=0.14.0"
-setuptools = "*"
 six = ">=1.11.0"
 
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = "*"
-
 [package.extras]
 format = ["idna", "jsonpointer (>1.13)", "rfc3987", "strict-rfc3339", "webcolors"]
 format_nongpl = ["idna", "jsonpointer (>1.13)", "webcolors", "rfc3986-validator (>0.1.0)", "rfc3339-validator"]
 
 [[package]]
-category = "dev"
-description = "Jupyter metapackage. Install all the Jupyter components in one go."
 name = "jupyter"
+version = "1.0.0"
+description = "Jupyter metapackage. Install all the Jupyter components in one go."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.0.0"
 
 [package.dependencies]
 ipykernel = "*"
@@ -296,17 +284,17 @@ notebook = "*"
 qtconsole = "*"
 
 [[package]]
-category = "dev"
-description = "Jupyter protocol implementation and client libraries"
 name = "jupyter-client"
+version = "5.3.4"
+description = "Jupyter protocol implementation and client libraries"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "5.3.4"
 
 [package.dependencies]
 jupyter-core = ">=4.6.0"
 python-dateutil = ">=2.1"
-pywin32 = ">=1.0"
+pywin32 = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 pyzmq = ">=13"
 tornado = ">=4.1"
 traitlets = "*"
@@ -315,12 +303,12 @@ traitlets = "*"
 test = ["ipykernel", "ipython", "mock", "pytest"]
 
 [[package]]
-category = "dev"
-description = "Jupyter terminal console"
 name = "jupyter-console"
+version = "6.1.0"
+description = "Jupyter terminal console"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "6.1.0"
 
 [package.dependencies]
 ipykernel = "*"
@@ -333,56 +321,56 @@ pygments = "*"
 test = ["pexpect"]
 
 [[package]]
-category = "dev"
-description = "Jupyter core package. A base package on which Jupyter projects rely."
 name = "jupyter-core"
+version = "4.6.3"
+description = "Jupyter core package. A base package on which Jupyter projects rely."
+category = "dev"
 optional = false
 python-versions = "!=3.0,!=3.1,!=3.2,!=3.3,!=3.4,>=2.7"
-version = "4.6.3"
 
 [package.dependencies]
-pywin32 = ">=1.0"
+pywin32 = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 traitlets = "*"
 
 [[package]]
-category = "dev"
-description = "Safely add untrusted strings to HTML/XML markup."
 name = "markupsafe"
+version = "1.1.1"
+description = "Safely add untrusted strings to HTML/XML markup."
+category = "dev"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
-version = "1.1.1"
 
 [[package]]
-category = "dev"
-description = "McCabe checker, plugin for flake8"
 name = "mccabe"
+version = "0.6.1"
+description = "McCabe checker, plugin for flake8"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.6.1"
 
 [[package]]
-category = "dev"
-description = "The fastest markdown parser in pure Python"
 name = "mistune"
+version = "2.0.3"
+description = "A sane Markdown parser with useful plugins and renderers"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.8.4"
 
 [[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
 name = "more-itertools"
+version = "8.2.0"
+description = "More routines for operating on iterables, beyond itertools"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "8.2.0"
 
 [[package]]
-category = "dev"
-description = "Converting Jupyter Notebooks"
 name = "nbconvert"
+version = "5.5.0"
+description = "Converting Jupyter Notebooks"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "5.6.1"
 
 [package.dependencies]
 bleach = "*"
@@ -390,7 +378,7 @@ defusedxml = "*"
 entrypoints = ">=0.2.2"
 jinja2 = ">=2.4"
 jupyter-core = "*"
-mistune = ">=0.8.1,<2"
+mistune = ">=0.8.1"
 nbformat = ">=4.4"
 pandocfilters = ">=1.4.1"
 pygments = "*"
@@ -398,19 +386,19 @@ testpath = "*"
 traitlets = ">=4.2"
 
 [package.extras]
-all = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=5.3.1)", "ipywidgets (>=7)", "pebble", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "mock"]
-docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "jupyter-client (>=5.3.1)"]
-execute = ["jupyter-client (>=5.3.1)"]
+all = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=4.2)", "ipywidgets (>=7)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython"]
+docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "jupyter-client (>=4.2)"]
+execute = ["jupyter-client (>=4.2)"]
 serve = ["tornado (>=4.0)"]
-test = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=5.3.1)", "ipywidgets (>=7)", "pebble", "mock"]
+test = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=4.2)", "ipywidgets (>=7)"]
 
 [[package]]
-category = "dev"
-description = "The Jupyter Notebook format"
 name = "nbformat"
+version = "5.0.4"
+description = "The Jupyter Notebook format"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "5.0.4"
 
 [package.dependencies]
 ipython-genutils = "*"
@@ -422,15 +410,14 @@ traitlets = ">=4.1"
 test = ["testpath", "pytest", "pytest-cov"]
 
 [[package]]
-category = "dev"
-description = "A web-based notebook environment for interactive computing"
 name = "notebook"
+version = "6.0.3"
+description = "A web-based notebook environment for interactive computing"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "6.0.3"
 
 [package.dependencies]
-Send2Trash = "*"
 ipykernel = "*"
 ipython-genutils = "*"
 jinja2 = "*"
@@ -440,6 +427,7 @@ nbconvert = "*"
 nbformat = "*"
 prometheus-client = "*"
 pyzmq = ">=17"
+Send2Trash = "*"
 terminado = ">=0.8.1"
 tornado = ">=5.0"
 traitlets = ">=4.2.1"
@@ -448,262 +436,253 @@ traitlets = ">=4.2.1"
 test = ["nose", "coverage", "requests", "nose-warnings-filters", "nbval", "nose-exclude", "selenium", "pytest", "pytest-cov", "nose-exclude"]
 
 [[package]]
-category = "main"
-description = "NumPy is the fundamental package for array computing with Python."
 name = "numpy"
+version = "1.18.1"
+description = "NumPy is the fundamental package for array computing with Python."
+category = "main"
 optional = false
 python-versions = ">=3.5"
-version = "1.18.1"
 
 [[package]]
-category = "dev"
-description = "Core utilities for Python packages"
 name = "packaging"
+version = "20.1"
+description = "Core utilities for Python packages"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "20.1"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
 six = "*"
 
 [[package]]
-category = "dev"
-description = "Utilities for writing pandoc filters in python"
 name = "pandocfilters"
+version = "1.4.2"
+description = "Utilities for writing pandoc filters in python"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.2"
 
 [[package]]
-category = "dev"
-description = "A Python Parser"
 name = "parso"
+version = "0.6.1"
+description = "A Python Parser"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.6.1"
 
 [package.extras]
-testing = ["docopt", "pytest (>=3.0.7)"]
+testing = ["pytest (>=3.0.7)", "docopt"]
 
 [[package]]
-category = "dev"
-description = "Utility library for gitignore style pattern matching of file paths."
 name = "pathspec"
+version = "0.7.0"
+description = "Utility library for gitignore style pattern matching of file paths."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.7.0"
 
 [[package]]
-category = "dev"
-description = "Pexpect allows easy control of interactive console applications."
-marker = "python_version >= \"3.3\" and sys_platform != \"win32\" or sys_platform != \"win32\""
 name = "pexpect"
+version = "4.8.0"
+description = "Pexpect allows easy control of interactive console applications."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.8.0"
 
 [package.dependencies]
 ptyprocess = ">=0.5"
 
 [[package]]
-category = "dev"
-description = "Tiny 'shelve'-like database with concurrency support"
 name = "pickleshare"
+version = "0.7.5"
+description = "Tiny 'shelve'-like database with concurrency support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.7.5"
 
 [[package]]
-category = "dev"
-description = "plugin and hook calling mechanisms for python"
 name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.13.1"
 
 [package.dependencies]
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 
 [package.extras]
 dev = ["pre-commit", "tox"]
 
 [[package]]
-category = "dev"
-description = "Python client for the Prometheus monitoring system."
 name = "prometheus-client"
+version = "0.7.1"
+description = "Python client for the Prometheus monitoring system."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.7.1"
 
 [package.extras]
 twisted = ["twisted"]
 
 [[package]]
-category = "dev"
-description = "Library for building powerful interactive command lines in Python"
 name = "prompt-toolkit"
+version = "3.0.3"
+description = "Library for building powerful interactive command lines in Python"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "3.0.3"
 
 [package.dependencies]
 wcwidth = "*"
 
 [[package]]
-category = "dev"
-description = "Run a subprocess in a pseudo terminal"
-marker = "python_version >= \"3.3\" and sys_platform != \"win32\" or sys_platform != \"win32\" or os_name != \"nt\" or python_version >= \"3.3\" and sys_platform != \"win32\" and (python_version >= \"3.3\" and sys_platform != \"win32\" or sys_platform != \"win32\")"
 name = "ptyprocess"
+version = "0.6.0"
+description = "Run a subprocess in a pseudo terminal"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.6.0"
 
 [[package]]
-category = "main"
-description = "PuLP is an LP modeler written in python. PuLP can generate MPS or LP files and call GLPK, COIN CLP/CBC, CPLEX, and GUROBI to solve linear problems."
 name = "pulp"
+version = "2.0"
+description = "PuLP is an LP modeler written in python. PuLP can generate MPS or LP files and call GLPK, COIN CLP/CBC, CPLEX, and GUROBI to solve linear problems."
+category = "main"
 optional = false
 python-versions = "*"
-version = "2.0"
 
 [package.dependencies]
 pyparsing = ">=2.0.1"
 
 [[package]]
-category = "dev"
-description = "library with cross-python path, ini-parsing, io, code, log facilities"
 name = "py"
+version = "1.8.1"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.8.1"
 
 [[package]]
-category = "dev"
-description = "Python style guide checker"
 name = "pycodestyle"
+version = "2.5.0"
+description = "Python style guide checker"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.5.0"
 
 [[package]]
-category = "dev"
-description = "passive checker of Python programs"
 name = "pyflakes"
+version = "2.1.1"
+description = "passive checker of Python programs"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.1.1"
 
 [[package]]
-category = "dev"
-description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
+version = "2.5.2"
+description = "Pygments is a syntax highlighting package written in Python."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.5.2"
 
 [[package]]
-category = "main"
-description = "Python parsing module"
 name = "pyparsing"
+version = "2.4.6"
+description = "Python parsing module"
+category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "2.4.6"
 
 [[package]]
-category = "dev"
-description = "Persistent/Functional/Immutable data structures"
 name = "pyrsistent"
+version = "0.15.7"
+description = "Persistent/Functional/Immutable data structures"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.15.7"
 
 [package.dependencies]
 six = "*"
 
 [[package]]
-category = "main"
-description = "A python package to formulate and solve resource-constrained scheduling problems"
 name = "pyschedule"
+version = "0.2.34"
+description = "A python package to formulate and solve resource-constrained scheduling problems"
+category = "main"
 optional = false
 python-versions = "*"
-version = "0.2.34"
 
 [package.dependencies]
 pulp = "*"
 
 [[package]]
-category = "dev"
-description = "pytest: simple powerful testing with Python"
 name = "pytest"
+version = "5.3.5"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "5.3.5"
 
 [package.dependencies]
-atomicwrites = ">=1.0"
+atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=17.4.0"
-colorama = "*"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
 py = ">=1.5.0"
 wcwidth = "*"
 
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
-
 [package.extras]
-checkqa-mypy = ["mypy (v0.761)"]
+checkqa-mypy = ["mypy (==v0.761)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
-category = "dev"
-description = "Extensions to the standard Python datetime module"
 name = "python-dateutil"
+version = "2.8.1"
+description = "Extensions to the standard Python datetime module"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
-version = "2.8.1"
 
 [package.dependencies]
 six = ">=1.5"
 
 [[package]]
-category = "dev"
-description = "Python for Window Extensions"
-marker = "sys_platform == \"win32\""
 name = "pywin32"
+version = "227"
+description = "Python for Window Extensions"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "227"
 
 [[package]]
-category = "dev"
-description = "Python bindings for the winpty library"
-marker = "os_name == \"nt\""
 name = "pywinpty"
+version = "0.5.7"
+description = "Python bindings for the winpty library"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.5.7"
 
 [[package]]
-category = "dev"
-description = "Python bindings for 0MQ"
 name = "pyzmq"
+version = "18.1.1"
+description = "Python bindings for 0MQ"
+category = "dev"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*"
-version = "18.1.1"
 
 [[package]]
-category = "dev"
-description = "Jupyter Qt console"
 name = "qtconsole"
+version = "4.6.0"
+description = "Jupyter Qt console"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.6.0"
 
 [package.dependencies]
 ipykernel = ">=4.1"
@@ -718,87 +697,87 @@ doc = ["Sphinx (>=1.3)"]
 test = ["pytest", "mock"]
 
 [[package]]
-category = "dev"
-description = "Alternative regular expression module, to replace re."
 name = "regex"
+version = "2020.2.18"
+description = "Alternative regular expression module, to replace re."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "2020.2.18"
 
 [[package]]
-category = "dev"
-description = "Send file to trash natively under Mac OS X, Windows and Linux."
 name = "send2trash"
+version = "1.5.0"
+description = "Send file to trash natively under Mac OS X, Windows and Linux."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.5.0"
 
 [[package]]
-category = "dev"
-description = "Python 2 and 3 compatibility utilities"
 name = "six"
+version = "1.14.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "1.14.0"
 
 [[package]]
-category = "dev"
-description = "Terminals served to xterm.js using Tornado websockets"
 name = "terminado"
+version = "0.8.3"
+description = "Terminals served to xterm.js using Tornado websockets"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.8.3"
 
 [package.dependencies]
-ptyprocess = "*"
-pywinpty = ">=0.5"
+ptyprocess = {version = "*", markers = "os_name != \"nt\""}
+pywinpty = {version = ">=0.5", markers = "os_name == \"nt\""}
 tornado = ">=4"
 
 [[package]]
-category = "dev"
-description = "Test utilities for code working with files and commands"
 name = "testpath"
+version = "0.4.4"
+description = "Test utilities for code working with files and commands"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.4.4"
 
 [package.extras]
 test = ["pathlib2"]
 
 [[package]]
-category = "dev"
-description = "Python Library for Tom's Obvious, Minimal Language"
 name = "toml"
+version = "0.10.0"
+description = "Python Library for Tom's Obvious, Minimal Language"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.10.0"
 
 [[package]]
-category = "dev"
-description = "Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed."
 name = "tornado"
+version = "6.0.3"
+description = "Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed."
+category = "dev"
 optional = false
 python-versions = ">= 3.5"
-version = "6.0.3"
 
 [[package]]
-category = "dev"
-description = "Fast, Extensible Progress Meter"
 name = "tqdm"
+version = "4.42.1"
+description = "Fast, Extensible Progress Meter"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "4.42.1"
 
 [package.extras]
 dev = ["py-make (>=0.1.0)", "twine", "argopt", "pydoc-markdown"]
 
 [[package]]
-category = "dev"
-description = "Traitlets Python config system"
 name = "traitlets"
+version = "4.3.3"
+description = "Traitlets Python config system"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.3.3"
 
 [package.dependencies]
 decorator = "*"
@@ -809,56 +788,56 @@ six = "*"
 test = ["pytest", "mock"]
 
 [[package]]
-category = "dev"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
 name = "typed-ast"
+version = "1.4.1"
+description = "a fork of Python 2 and 3 ast modules with type comment support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.1"
 
 [[package]]
-category = "dev"
-description = "Measures number of Terminal column cells of wide-character codes"
 name = "wcwidth"
+version = "0.1.8"
+description = "Measures number of Terminal column cells of wide-character codes"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.8"
 
 [[package]]
-category = "dev"
-description = "Character encoding aliases for legacy web content"
 name = "webencodings"
+version = "0.5.1"
+description = "Character encoding aliases for legacy web content"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.5.1"
 
 [[package]]
-category = "dev"
-description = "IPython HTML widgets for Jupyter"
 name = "widgetsnbextension"
+version = "3.5.1"
+description = "IPython HTML widgets for Jupyter"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "3.5.1"
 
 [package.dependencies]
 notebook = ">=4.4.1"
 
 [[package]]
-category = "dev"
-description = "Backport of pathlib-compatible object wrapper for zip files"
-marker = "python_version < \"3.8\""
 name = "zipp"
+version = "3.0.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "3.0.0"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["jaraco.itertools", "func-timeout"]
+testing = ["func-timeout", "jaraco.itertools"]
+docs = ["rst.linker (>=1.9)", "jaraco.packaging (>=3.2)", "sphinx"]
 
 [metadata]
-content-hash = "7e1a230ab7c13166ca73dd7f75fee71451394777d13bd40569c97d775a1ac353"
+lock-version = "1.1"
 python-versions = "^3.7"
+content-hash = "7e1a230ab7c13166ca73dd7f75fee71451394777d13bd40569c97d775a1ac353"
 
 [metadata.files]
 appdirs = [
@@ -887,6 +866,7 @@ black = [
 ]
 bleach = [
     {file = "bleach-3.1.0-py2.py3-none-any.whl", hash = "sha256:213336e49e102af26d9cde77dd2d0397afabc5a6bf2fed985dc35b5d1e285a16"},
+    {file = "bleach-3.1.0-py3.8.egg", hash = "sha256:4ca3ec10244c9f11ec129b054912e8bc9ecefc2e0b6bf0dab273f0e72cf381e4"},
     {file = "bleach-3.1.0.tar.gz", hash = "sha256:3fdf7f77adcf649c9911387df51254b813185e32b2c6619f690b593a617e19fa"},
 ]
 click = [
@@ -981,20 +961,39 @@ markupsafe = [
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     {file = "MarkupSafe-1.1.1-cp35-cp35m-win_amd64.whl", hash = "sha256:9add70b36c5666a2ed02b43b335fe19002ee5235efd4b8a89bfcf9005bebac0d"},
     {file = "MarkupSafe-1.1.1-cp36-cp36m-macosx_10_6_intel.whl", hash = "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff"},
+    {file = "MarkupSafe-1.1.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:d53bc011414228441014aa71dbec320c66468c1030aae3a6e29778a3382d96e5"},
     {file = "MarkupSafe-1.1.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473"},
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+    {file = "MarkupSafe-1.1.1-cp36-cp36m-manylinux2010_i686.whl", hash = "sha256:3b8a6499709d29c2e2399569d96719a1b21dcd94410a586a18526b143ec8470f"},
+    {file = "MarkupSafe-1.1.1-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:84dee80c15f1b560d55bcfe6d47b27d070b4681c699c572af2e3c7cc90a3b8e0"},
+    {file = "MarkupSafe-1.1.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:b1dba4527182c95a0db8b6060cc98ac49b9e2f5e64320e2b56e47cb2831978c7"},
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+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:caabedc8323f1e93231b52fc32bdcde6db817623d33e100708d9a68e1f53b26b"},
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+    {file = "MarkupSafe-1.1.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:d73a845f227b0bfe8a7455ee623525ee656a9e2e749e4742706d80a6065d5e2c"},
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+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:2beec1e0de6924ea551859edb9e7679da6e4870d32cb766240ce17e0a0ba2014"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:7fed13866cf14bba33e7176717346713881f56d9d2bcebab207f7a036f41b850"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:6f1e273a344928347c1290119b493a1f0303c52f5a5eae5f16d74f48c15d4a85"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:feb7b34d6325451ef96bc0e36e1a6c0c1c64bc1fbec4b854f4529e51887b1621"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win32.whl", hash = "sha256:22c178a091fc6630d0d045bdb5992d2dfe14e3259760e713c490da5323866c39"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:b7d644ddb4dbd407d31ffb699f1d140bc35478da613b441c582aeb7c43838dd8"},
     {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
 ]
 mccabe = [
@@ -1002,16 +1001,16 @@ mccabe = [
     {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
 ]
 mistune = [
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-    {file = "mistune-0.8.4.tar.gz", hash = "sha256:59a3429db53c50b5c6bcc8a07f8848cb00d7dc8bdb431a4ab41920d201d4756e"},
+    {file = "mistune-2.0.3-py2.py3-none-any.whl", hash = "sha256:e3964140c0775535fba50bd616fe180920044a64bc21850253267b07bff89924"},
+    {file = "mistune-2.0.3.tar.gz", hash = "sha256:d7605b46b6156b53b7d52a465202b29a6f00f4ea4130ad5d25e9d5547d6b7e50"},
 ]
 more-itertools = [
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 ]
 nbconvert = [
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-    {file = "nbconvert-5.6.1.tar.gz", hash = "sha256:21fb48e700b43e82ba0e3142421a659d7739b65568cc832a13976a77be16b523"},
+    {file = "nbconvert-5.5.0-py2.py3-none-any.whl", hash = "sha256:4a978548d8383f6b2cfca4a3b0543afb77bc7cb5a96e8b424337ab58c12da9bc"},
+    {file = "nbconvert-5.5.0.tar.gz", hash = "sha256:138381baa41d83584459b5cfecfc38c800ccf1f37d9ddd0bd440783346a4c39c"},
 ]
 nbformat = [
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@@ -1249,19 +1248,28 @@ typed-ast = [
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