Introduce poetry packaging

Move build system to poetry, update CI workflow.

changed milestone to %publish as v2.0.0 on pypi

requested review from @christophknote

assigned to @christophknote

added 37 commits

• 28baca76...88d88727 - 15 commits from branch mbees:master
• 9a6c6f3a - Move to poetry. Initial gitlab-ci.yaml.
• c24f6c04 - Fix ci script
• 3d817067 - Fix dependencies
• 3a605c44 - Fix toml
• 6c4545ca - Fix numpy dep
• 837f7e38 - Ignoring lock
• fcfddc63 - Fix numpy install
• bf41b475 - Testing alternative dependeny issue
• 1fb77ba4 - Still not working
• 078534c7 - Fix coverage
• 4102efa2 - Like that?
• 432c3bae - Or so?
• 65353214 - Oder so?
• e861e7d4 - Oder so?
• 142367c1 - Vielleicht so?
• 99523424 - Coverage needed
• 1d2e7a9d - So?
• 3be8d871 - Adding Sphinx dev deps, remove lock file
• 72b162e1 - Ah, forgot something
• f08ad580 - So etwa
• 4c38e6d1 - Docs like that
• 3fd50c35 - Merge branch 'introduce_poetry_packaging' of...

Compare with previous version

merged

mentioned in issue #21 (closed)

mentioned in issue #4 (closed)