fix error message and release date

Author: dimitri-yatsenko

datajoint/__init__.py

@@ -14,8 +14,8 @@
     http://dx.doi.org/10.1101/031658
 """
 
-__author__ = "Dimitri Yatsenko, Edgar Y. Walker, and Fabian Sinz at Baylor College of Medicine"
-__date__ = "January 14, 2018"
+__author__ = "DataJoint Contributors"
+__date__ = "February 7, 2019"
 __all__ = ['__author__', '__version__',
            'config', 'conn', 'Connection',
            'schema', 'create_virtual_module', 'get_schema_names',
@@ -26,7 +26,6 @@
            'DataJointError', 'DuplicateError', 'key']
 
 
-# ------------- flatten import hierarchy -------------------------
 from .version import __version__
 from .settings import config
 from .connection import conn, Connection
@@ -38,4 +37,4 @@
 from .erd import ERD
 from .admin import set_password, kill
 from .errors import DataJointError, DuplicateError
-from .fetch import key
+from .fetch import key

datajoint/declare.py

@@ -285,12 +285,10 @@ def compile_attribute(line, in_key, foreign_key_sql):
     else:
         if match['default']:
             quote = match['default'].upper() not in literals and match['default'][0] not in '"\''
-            match['default'] = ('NOT NULL DEFAULT ' +
-                                ('"%s"' if quote else "%s") % match['default'])
+            match['default'] = 'NOT NULL DEFAULT ' + ('"%s"' if quote else "%s") % match['default']
         else:
             match['default'] = 'NOT NULL'
     match['comment'] = match['comment'].replace('"', '\\"')   # escape double quotes in comment
-
     is_configurable = match['type'].startswith(('external', 'blob-', 'attach'))
     is_external = False
     if is_configurable:
@@ -299,7 +297,7 @@ def compile_attribute(line, in_key, foreign_key_sql):
         match['comment'] = ':{type}:{comment}'.format(**match)  # insert configurable type into comment
         store_name = match['type'].split('-')
         if store_name[0] not in ('external', 'blob', 'attach'):
-            raise DataJointError('Invalid attribute type in:\n%s' % line)
+            raise DataJointError('Configurable types must be in the form blob-<store> or attach-<store> in:\n%s' % line)
         store_name = '-'.join(store_name[1:])
         if store_name and not store_name.isidentifier():
             raise DataJointError(