0.4 Release

[cthoyt]

We need a plan for the 0.4 release. Please edit the top note on this issue in place rather than making a long long long thread to read

@matentzn preferred path:

1. We clearly communicate that minor version bumps do not retain backwards compatibility to the community
2. Every time we add a breaking change, we bump a minor version
3. When we are done with the current refactoring, we will move to version 1.0

[matentzn]

Process:

• Get Optimization of some functions #462 reviewed by @sierramoxon and merge
• Create a candidate release (0.4-dev) (which should become a dev release on pypi)
• Ensure prefix maps is a true bimap #469 (blocked)
• Migrate OAK to sssom-py 0.4 and see that nothing breaks (I hope there are tests in place - see Improve usage of SSSOM-py INCATools/ontology-access-kit#666)
• Finish Add list of breaking changes since sssom release 0.3.31 #461
• Make proper 0.4 release and warn community

[matentzn]

@hrshdhgd this issue is now highest priority for SSSOM I think?

[hrshdhgd]

Started a list here based on changes in oaklib

[hrshdhgd]

@cthoyt already as a PR in oaklib: INCATools/ontology-access-kit#666 .... completely missed it.

[matentzn]

@hrshdhgd I added #469 as a blocker for the 0.4 release.