1.0.0-f899db8

Automatic pre-release for 1.0.0-f899db8

New and improved documentation:

• Release Notes
• Changelog
• Breaking Changes
• Ceedling Packet (user manual)
• List of plugins with descriptions and links to documentation
• README

For longtime Ceedling users, you may want to start with the 1.0.0 Project Configuration Cheatsheet in the Release Notes.