Tag v0.58.0

why: Behavioral change — explicit UTF-8 encoding in subprocess
decoding warrants a minor version bump.
what:
- Bump version 0.57.1 -> 0.58.0 in pyproject.toml and __about__.py
- Stamp CHANGES with release date 2026-05-23
- Add next-release placeholder

Tag v0.57.1 (rollback an error raise)

Tag v0.56.0

Tag v0.55.1

Tag v0.55.0 - Unlockers for teamocil / tmuxinator compat

Tag v0.54.0 (improved logging, #637)

Tag 0.53.1 (new_session fix)

Tag v0.53.0

Tag v0.53.0a0