Added boolean constant to boolean expressions
Changed version to 0.4.2
Changed default result projection for TwoSourceJoins
Added input selection to array access conversion utility method
Added removeInputSelections to ExpressionUtil
Added debug switches for SopremoRecord comparators
Fixed issue with secondary sort
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo
Merge pull request #27 from fatschi/master

der hotfix für den bug in der first([])-Semantik und der dazu failende TestCase
Merge remote-tracking branch 'original/master'
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo