+ fix build failure on Windows
+ fix copying Python resource files to destination on Windows
+ fix gradient background issue when creating snapshot, remove superfluous signal from FileOptionsDialog
+ fix possible scaling problem of datum label
+ support of arbitrary background colors in snapshot function
+ fix transparency problem, support antialiasing, background color issue
+ fixes #0001808: Double Clicking Sketcher PolyLine Causing Crash
Arch: fixed encoding problem in Survey tool - fixes #1821