Facile

Minor fix for specific Goals

Support for n dimensional arrays
Type annotations
Fixed warnings
Build with poetry, integration in Github Actions

- Constraint operators for `~` (not) and `^` (xor)
- Better error handling on `__bool__` or `__nonzero__`
- Documentation revamp
- Cross-compilation embedded into `setup.py`

Functionalities:
- Constraint reification
- Global constraints (alldifferent, gcc) must all be posted
- Better support for arrays of variables: min(), max(), sort()
- Unary operators on variables, expressions and constraints

Interface:
- Documentation switched to English
- More significant Exception handling
- More extensive set of examples

Miscellaneous:
- Improve general stability
- Bundles for Python 3.5

- Improve general stability
- Proper use of disjunction and conjunction of constraints
- Use of array of variables and possibility to index them as variables

And also, the egg-file for Windows (only 3.4) :+1:

This version is available on the official pypi repository.
- `pip install facile` on Linux/Windows;
- `easy_install facile` on any operating system
(pypi doesn't allow to push wheel files for native Linux extensions.)

First successful release for a constraint programming class (hence the documentation in French)

> The release is published as python-egg files for Python 2.7 and 3.4 for Linux (tested on Debian Wheezy and Ubuntu 14.04) and MacOS (10.9). Binaries for Windows are not ready yet.