0.4.0: GPU tests, re-adding jit, improved NN OT solvers, and misc.

What's Changed

• Fix badges by @michalk8 in #211
• Feature/faster gw init by @michalk8 in #213
• Fix/device array check by @michalk8 in #216
• Remove support for Python 3.7 by @michalk8 in #227
• chore: add yapf config to pyproject.toml by @SauravMaheshkar in #230
• Remove functional API by @michalk8 in #222
• Docs/notebooks myst by @michalk8 in #233
• [ci skip] Add environment.yml for binder by @michalk8 in #236
• Use lax.cond when computing error in Sinkhorn by @michalk8 in #235
• Fix/debiased entropic map by @michalk8 in #238
• Misc/tox by @michalk8 in #239
• Re-add jit argument by @michalk8 in #221
• Add GPU test runner by @michalk8 in #242
• Remove old Transport interface by @michalk8 in #243
• Remove shape check in LRCGeometry by @michalk8 in #247
• Add regularized costs by @michalk8 in #244
• Check only whether problem can be LR by @michalk8 in #248
• Improvements to the neural dual solver by @bamos in #219

New Contributors

• @SauravMaheshkar made their first contribution in #230

Full Changelog: 0.3.1...0.4.0