Typo
Make transformations handles independent from canvas resolution
Fix bug with disappearing handles of Bline-tool when zoom
Fix bug with smooth move tool
Fix Duck constructor to avoid implicit instantiation of Duck
Fix warnings in state_stars.cpp
Use larger transformation widget
Skeleton layer is not an Experimental feature anymore.

Also, hide "Enable experimental features" option for now.
Don't allow none of layer be created for circle tool.
Don't allow none of layer to be created for spline tool
Don't allow none of layer to be created for draw tool
Don't allow none of layer to be created for polygon tool
Don't allow none of layer to be created for rectangle tool
Don't allow none of layer to be created for star tool
Don't allow none layer to be created for text tool
Don't allow none of layer to be created for gradient tool