Pip

Create python wheels package and integrate with pypi (pip).

Wheels packages :

• Each commit trigger the build of linux,windows and osx packages (cross compilation from a linux docker via gitlab-ci)
• Those packages can be downloaded during 24h as artefacts from gitlab-ci
• The linux wheel package is used in automatic benchmarks.

Release to pypi :

• Packages built from a commit with a tag "w-*" (e.g. w-1.1.6) are automatically uploaded to https://test.pypi.org/project/migflow/
• Packages built from a commit with a tag "v-*" will be automatically uploaded to https://pypi.org/project/migflow/ (and can be installed from anywhere with pip)
• tags v-* and w-* are protected, only maintainers can assign them.
• if a w-* or v-* tag is present, the package release number is deduced from the tag name

libmbtools2 and libmbtools3 have been removed. Instead, quadtree.c is directly built into libmbfluid* and libscontact*