- Extension tree explorer
- Addin manifest editing
- Completion
- Nested extension paths
- Navigation
- Actions (create class, etc)
- Validation (missing classes, attributes, etc)
- Completion
- File template editing
- Project template editing
- Filter in addin reference editor
- Targeting alternate MD/XS installation
- Refresh code completion when addin reference added
- Publishing wizard
- Templates/wizards for common extensions