Fix issue with visit_ExtSlice where it was trying to unpack a non-sequence
Add parenthesis to BinOp to easily maintain precedence (no pretty, but
correct)
Added test for the first fix: getting del to work
Fixed the bug concerning the del keyword
Added test for the next fix: try-except
Fixed the bug concerning the try-except-syntax
Added a test for the "import ... as ..."-syntax
codegen can handle "import ... as ..."-syntax now.
fix binary operation code generation
several bug fixes which have been found while developing https://github.com/Doboy/underscore
Merge branch 'master' of https://github.com/gemoe100/codegen
Merge branch 'master' of https://github.com/Doboy/codegen

Conflicts:
	codegen.py
Merge branch 'master' of https://github.com/cwa-/codegen
Now merges pull requests from Doboy, jbremer, gemoe100, and cwa-
Merge remote-tracking branch 'upstream2/master'