- Updated CHANGELOG.md, CONTRIBUTING.md, pyproject.toml, rp/__main__.py, rp/commands/help_docs.py, rp/input_handler.py, rp/research.md, rp/tools/filesystem.py, rp/tools/minigit.py, and rp/tools/patch.py to replace 'assistant' and 'PR Assistant' with 'rp'
- Bumped version from 1.59.0 to 1.60.0 in pyproject.toml
- Added show_diff parameter to search_replace and apply_patch functions with visual diff output support
- Changed default commit author from 'RP Assistant' to 'rp' in minigit tool
