- Implement `grokkit changelog` command with flags for version, since, stdout, and commit reminder
- Add git helpers for latest/previous tags and formatted log since ref
- Include tests for message building and full changelog construction
- Refactor logger package to use Go's slog for JSON-structured logs
- Add configurable log levels (debug, info, warn, error) via config and flags
- Integrate logging across commands, git operations, and API client with metrics like timing and sizes
- Update README with logging documentation and usage examples
- Add global --debug and --verbose flags
- Enhance tests for logger initialization, levels, and structured output
- Enhance error checking in all commands using git.Run
- Refactor git helper to return errors properly
- Fix README.md filename typo
- Update .gitignore with additional ignores
- Add fallback for config home dir
- Improve request handling in grok client
