Fix the git uri; ex post, but bttr late than never
Fix package.json to be able to publish.
Update README.md
AbstractCodeGenerator is not a subclass of NodeVisitor
Fix issue #429 - #printString call #printOn:

All subclasses of Object now implement #printOn:
Removed Object >> printNL and #log:block:
- Fixed Array printing
- Updated printing unit tests
Removed Symbol >> asSuperSelector
Merge branch 'master' into helios