sync
Merge remote-tracking branch 'upstream/master'
hide checkbox OpenGL
small fix
added OpenGL in LayerWidget
OpenGL test;
added QDebug
Merge pull request #99 from slima4/master

fixed bugs
стало отдавать честный размер
отказ от QGraphics-подход
отказ от QGraphics
Merge pull request #100 from m-garanin/test1

откат от QGraphics
rewrite boxwidget
change resizeLayer -->repositionLayer
D&D Box refactor + Apply action
Merge pull request #102 from m-garanin/master

sync