fixed a memory leak with callbacks
MainThread: throw lua error if initialise callback fails
setLookAndFeel(int), mapped to indices V1: 1, V2: 2, V3: 3 and my custom one to 4
lnf: missing dependencies
LLabel: added minimumHorizontalScale and setJustificationType
LuaO: dump full stacktrace when callback fails completely
removed debug trace
updated to JUCE 3.0.1
LuaO: return quickly if not callback is set
LBase: added new hasCallback method
LMainComponent: implemented paint and resized callbacks