ReST-compliant docstrings

Bugfixes, input validation.

Filter made better

Removing unnecessary map to list conversion

Acceleration due to better caching; minor internal changes.

PyPNM upgrade to 2.21.2.2; minor GUI improvements

20:20 "Symmetry" maintenance update, harmonization, GUI improvements

Filter rewritten for any color mode support with single map.

"Generatio" build; GUI unification

9 May 2025 "Victory" release. Autofocus fixes in export, Python 3.10 …

…compatibility. in import