v0.2.1-dev5

From commit c6eeaac (corresponding to v0.2.0, according to Poetry):

1. 1c3cde6: chore(ci): let the author of the pre-releasing commit author the automatic release commit
   • dev change: commit is described as chore(ci)
2. b5102a6: chore(ci): commit & push new version upon release
   • dev change: commit is described as chore(ci)
3. 487678a: chore(build): fix computation of version number in bump_version.py
   • dev change: commit is described as chore(build)
4. d50786c: chore(build): fix rendering of changelog to make it even more readable
   • dev change: commit is described as chore(build)
5. 813e3c4: chore(build): improve changelog generation in markdown format
   • dev change: commit is described as chore(build)

Total commits: 5, of which:

• 0 major changes
• 0 minor changes
• 0 patch changes

hence, next version is: 0.2.1.dev5