mp++ 2.0.0

[bluescarni]

This is an incremental release with no new features or API breaking changes.

The major version bump originates from the fact that mp++ now requires FLINT>=3 if the (optional) Arb support is enabled. Arb has been incorporated in the FLINT library beginning from version 3 and FLINT<3 is not supported any more by mp++.

Additionally, Python interoperability support for Python 2 has been dropped and mp++ now requires CMake>=3.12 when building from source.

The full changelog, as usual, is available here:

https://bluescarni.github.io/mppp/changelog.html

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This discussion was created from the release mp++ 2.0.0.