Release 1.5.0 - Subscriber Write Operations

Add subscriber write operations for managing subscriber data and tags.

New commands:
- kit subscriber create
- kit subscriber update
- kit subscriber add-tag
- kit subscriber remove-tag
- kit subscriber unsubscribe

See RELEASE_NOTES.md for full details.

Release v1.4.0

**New Features:**
- Broadcast write operations (create, update, delete) for managing broadcast drafts
- Draft-only by design: scheduling intentionally not exposed via CLI for safety
- Segment and tag targeting support
- Template support and HTML content handling

**Bug Fixes:**
- Fixed JSON deserialization for subscriber email search
- Added --email flag to kit subscriber search command

Release v1.3.0

New Features:
- Account analytics command for aggregate email statistics
- Top broadcast analysis to identify best-performing broadcasts
- Subscriber engagement scoring with multiple algorithms
- Cold subscriber detection for re-engagement campaigns

Bug Fixes:
- JSON serialization error in subscriber list command
- Subscriber export limits now default to all subscribers
- State filtering applied server-side for accurate results
- Form/segment subscriber parsing corrected

Kit CLI v1.1.1

Bug fixes for Kit V4 API compatibility:
- Fixed broadcast stats parsing and added per-URL click tracking support
- Fixed subscriber tags display by fetching tags via separate endpoint
- Fixed segment/sequence counts to show N/A when unavailable
- Added Known Limitations documentation section

Release 1.1.0

New Features:
- Broadcast analytics command with performance metrics
- Comprehensive help system for all commands

Bug Fixes:
- Kit V4 API compatibility fixes
- Test infrastructure race condition fixes

Platform Updates:
- Upgraded to .NET 10 SDK

Release v1.2.0

New Features:
- Cohort analysis commands (by-signup, by-tag, by-form) for retention and lead source tracking
- Broadcast trends and compare commands for performance analysis
- Form trends and compare commands for signup trend analysis

Bug Fixes:
- Fixed sequence display to remove misleading columns when API doesn't provide data
- Fixed segment subscriber count display for Kit API v4 compatibility
- Added proper handling for missing Kit API v4 sequence endpoints

Release v1.1.2

New Features:
- Broadcast Click Analytics: Added kit broadcast clicks command with export support

Bug Fixes:
- Fixed incorrect percentage calculations for Kit V4 API rates

Testing Improvements:
- Added comprehensive unit tests for tag commands

Kit CLI v1.0.0

Kit CLI v1.0.0-beta2

Release v1.0.0-beta1 - Beta release with install script improvements