allow setting prerelease versions other then -pre
Fixes #1053
- Update #ifNotEmpty:, #ifEmpty:ifNotEmpty:, and ifNotEmpty:#ifEmpty: to take self as an optional argument to the ifNotEmpty: block
- Add tests to testIfEmptyFamily
Merge pull request #1054 from seandenigris/Issue1053

ifNotEmpty: family passes receiver into block
Bump require.min.js to 2.1.14.
Regression tests for GH-1057.
Merge branch 'regression-1057' into bootjs-dnu-refactor