slick/slick — pull request #750 by cvogt (2014-04-07 11:01:20+00:00)
Title: Enhance null comparisons

- Collections api conformant aliases isEmpty and nonEmpty for Option columns
- add scaladoc
- disallow === None (in favor of isNull, which is what you want)
- add tests for isNull, isEmpty, isNotNull, nonEmpty, === None

review by @szeiger