Call UseDrawPriority( true ) after creating GAL to enable.
VIEW::Add() gets a new optional argument to specify the draw order
when adding an item. If the new argument is left default, the draw
order will increment with each call of VIEW::Add().
Fix std::bind calls after change to VIEW::Add
- Finalize transition to BOARD_COMMIT (removed all remaining uses of PICKED_ITEMS_LIST) and implicit view/ratsnest updates
- Simplified SELECTION class, it now can be directly added to a VIEW
- Removed unnecesary casts and templates
- Introduced C++11 features (range based for, lambdas) where they improve code readability
- Added non-undoable COMMITs, which can be used to propagate change notifications to interested listeners (e.g. ratsnest/view)