formatn-0.3.3.1: ChangeLog.md

0.3.3.1
===

- removed doctest-parallel test suite, use cabal-docspec in CI instead
- updated CI to use cabal-docspec 0.0.0.20250606

0.3.3
===

- GHC 9.14.1 support
- simplified Cabal stanzas to best practice template

0.3.2
===

- added Data instances


0.3.1
===

- added doctests