style: adopt ruff (format + lint) at 88, replacing black/isort/flake8

Format-only: Python files are AST-identical apart from import order.
pre-commit end-of-file/trailing-whitespace fixes applied repo-wide.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [0.2.2] (2020-07-19)
 
-Second release is focused on cleanup, documentation. 
+Second release is focused on cleanup, documentation.
 
  * flake8, black, isort - all warnings and errors fixed.
  * Documentation improved.
@@ -19,4 +19,3 @@ First release to PyPi.
  * Config through ConfigObj ini. Define spec file and input config.ini
  * Colored Logging
  * Services can be defined and provided to classes
-