Merge pull request #6 from edgarmueller/master

Closes issue #5
Merge pull request #9 from edgarmueller/master

Closes issues #3, #7 & #8

#3: readOnly schema op should work with classes, too
#7: fix package warnings
#8: Cleanup base schema ops
fixes #10
Merge pull request #14 from Umzugsagenten/fix/issue-10

Fixes #10 (QBCollectionValidation does not update posix time type)
Updated scala & sbt version