Fix multiple bugs and issues (#6)

* Fix multiple bugs and issues

- Fix anchored gitignore patterns on Windows
- Fix YAML writer issues with special filenames
- Fix incorrect Black version in setup.cfg
- Fix CD workflow version bumping with better Python script
- Fix ambiguous git push in CD workflow
- Fix gitignore negation logic
- Add default ignore patterns
- Change default verbosity to ERROR level
- Add tests for fixes
- Fix line endings and linting issues

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix test for special characters in filenames

- Add Windows compatibility for special characters test
- Double quotes are not allowed in Windows filenames
- Add fallback to using @ character on Windows systems

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: nikolay-e

.flake8

@@ -1,2 +1,2 @@
-[flake8]
-max-line-length = 130
+[flake8]
+max-line-length = 130