Base work towards AST creation.
We've still missing tests.
Fixes #29
Various fixes and adds, implementing the AST and its semantics checks.
Fixes #29, fixes #30.
Updated lots of tests.
Started testing the PixieDustTree.
Fixes a bug in lexicon, we did not count spaces.
Adds and fixes circular inheritance.
Adding and suppressing more tests. Fixing new stuff.
Finished name resolution checking.
Suppress Token's equals(Token t) method to avoid confusion when
verifying type equality.
Add more tests (up to level-2 expression).
Restore package naming.
Fixes some more bugs.
Finish up checking according to the powers-that-be.
Published PixieDustTree version.
Merge pull request #31 from lunaskyrise/pixie-dust-tree

Merge PixieDustTree implementation to Master tree