fixed dict problems
fix some other array parts
fix list comprehensions recursion problems
fix list comprehension problems for non-nested
also fixed nested list comprehensions
fix rest of rename tests
completely rewrote helpers.search_function_definition
refactoring exception fixes
fixed refactoring: inline
simplify and fix refactoring: extract
little cleanup, removed old unused code
removed code part of Statement
removed merged Statement.used_funcs and used_vars (made no sense)
todo remove
fixed position problems (with tokenizer offsets)
Script.get_in_function_call -> Script.function_definition
api.Script.get_definition -> definition, to be consistent in the api naming. deprecated api.Script.get_definition
basic listcomprehension/lambda move
fixed invalid list comprehension tests
basic lambda implementation