- added AstBuilding.py
- new AstNodes.py that stores all Nodes and different types that we'll
create
- cleaned up Parsing.py heavily, now returns the parse tree
- cleaned up Test.py as best I could to accomodate everyone
- removed not needed file utils.py
- commented out my code in Weeding.py

- condensed getting the last rule, no more need for copying the stack
- children are now right way round, not reversed

- added superClass and superInterface empty rules
- added print errors to parsing
- added a relevant thing in README

- fixed some error handling in parsing
- needed to reset global vars after each test
- added some more logic for testing Parsing in Test.py to match Scanning