The Gimp 2.8.0

* User Interface
- Single-Window Mode
- Multi-Column Dock Windows
- More Screen Real Estate For Dockable Dialogs
- Save And Export
- Layer Groups
- Tools Drawn With Cairo
- On-Canvas Text Editing
- Keyboard Shortcut Changes
- Simple Math In Size Entries
- Minor Changes
* Tools & Plug-ins
- Brush System Improvements
- Tool Preset Improvements
- Cage Transform Tool
- File Plug-Ins
- For Tablet Users
- Resource Tagging
- Resources
- Minor Changes
* Miscellaneous
- Plug-in Development
* API Changes