Working in progress...
Merge branch 'dev' into view-transform
Still solving compiler errors...
Compile ok, but...
Update handtool.cpp

Fix letter case.
minor
Get rid of duplicated methods.
Windows title
Rename
Still refactoring...
Minor
Working...
Fix...keep going
Finally...compile ok.
Remove unused header
Update mainwindow2.cpp
Remove buggy vector floodfill temporary.

Maybe re-implement it some day.
Remove unused headers
Refactoring
Preview window