- Proto of PatternPane playing machine patterns in list
- refactored and documented command framework
- clean up bubbling exceptions to app controller in command framework
- added canMove() to entry clip drag move
- added basic impl for MenuBar, ToolBar and ToolBarGroup
- implemented simpl commands from the ToolbarItem
- fixed how cancle() works in command history
- added StatusManager impl
- implemented ToolBarBehavior and Play/Stop tool group
- create TempoToolGroupBehavior
- updated look & feel to dark gray