Adding Expression resolution code
Merge branch 'master' of https://github.com/azkaban/azkaban2 into expression
Fixing test cases for prop expressions
Rewrote the expression parser to be more flexible and expressive. Now can handle $((1+2)+3)
Removing errant Sys out statement
Renaming count to bracketCount
Merge pull request #229 from rbpark/expression

Job properties expression