bugs fixes
Merge branch 'abbranch' of https://github.com/normantaskudzma/paintapi into abbranch
Merge remote-tracking branch 'origin/nkbranch' into abbranch
added undo history
Fixed UndoHistory function
Merge remote-tracking branch 'origin/nkbranch' into abbranch
test
Merge remote-tracking branch 'origin/abbranch' into nkbranch
Merge remote-tracking branch 'origin/abbranch' into nkbranch
Merge with abbranch and fix