fix for py::enumerate

1.4.3

fix for py::enumerate

fix a bug in fractions operator/=(Z) Z=int

1.4.2

fix a bug in fractions

add key_iterator::operator++(int) for transrangers support

1.4.1

add operator++(int) for transranger

py::range, py::enumerate and fun::Fraction downgrade to C++11

1.4

fix style

Updated third-party libraries

1.3

update third-party libraries; prepare for version 1.3

change version 1.2 in CMakeList.txt

1.2.2

version 1.2

fix documentation build

1.2.1

fix doxygen

downgrade to c++14

1.2

try to use conda to install doxygen 1.9

Separate individual class as a single header file

1.1

tag 1.1

initial release

1.0

fix windows build and style