changed missing value behaviour in BatchAggregationExpression, added failing test accordingly
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo
ignored failing test, opened issue on gh
fixed bug in camelCase function
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo
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