added findVariable() in Expression and removed "." in names of objects
Merge remote-tracking branch 'upstream/master'
Merge pull request #52 from vapolyakov/master

tuple in kotlin for each
removed unnecessary space after kotlin type. return Object type, if compare different classes
Merge remote-tracking branch 'upstream/master'
Merge pull request #51 from Podmev/master

added findVariable() in Expression and removed "." in names of objects
global refactoring stage 1: total package renaming and replacing