Update translations.
Merge branch 'master' into release-1.2
Merge branch 'master' into release-1.2
Bump version number.
Sync translations with Transifex.
Merge branch 'release-1.2'
Update copyright year.
Use key sequences and menu roles.
Add README file.
Replace ChangeLog with NEWS.
Fix translated name of half rotational pattern.
Sync translations with Transifex.
Add manpage.
Add NSIS installer for Windows.