Added if else statements, interpreter
End of Thursday 17 January
Merge branch 'master' of https://github.com/software-engineering-amsterdam/sea-of-ql
Implemented semantic check and changed grammar to support nested ifs

Semantic Check: Can gather all idents in <ident,label,Type> form
-> needs now to implement the rest
AST-Grammar: improved code to support nested conditional statements
Computed questions apart, unit tests omgedraaid
Added tests
Changed indentations
Did some refactoring
Merge branch 'master' of https://github.com/software-engineering-amsterdam/sea-of-ql
grammar changes
type checker fully functional, elaborate tests
Merge branch 'master' of https://github.com/software-engineering-amsterdam/sea-of-ql
WIP: Using a graph to calculate use of variables which cannot be assigned. This is not finished, semantics tests therefore still fail.
Graph-based variable checking seems to work.
added compiled error functionality
And it does work. Usage is now calculated via traversal of a graph.
Blah
Blah
Merge branch 'kemi' -- progress
First version