remove SetBuilder.addEach

SetBuilder.addAll already handles Arrays.
Also: SetBuilder.addAll can take SetViews.
MapBuilder.putAll takes a MapView
Sets.addAll/removeAll: handle SetViews
new Array() -> []
Random.saveState, restoreState

Also: use a constant-sized Vector instead of an Array for state
1.1 release
prepare for 1.2 development
Fix LruCache