Introduce Jison
Implement rough lexer
Rough draft of parser; whitespace treatment
Parser almost there
Implement explist, fix grammar
Test for function call parsing.

This is more of an example; how to mock the yy object for testing purposes.
Of course, it's also a full-blown test, making sure that stuff actually works.
Test for predecence in basic operations
Tabify
Put generated parser in js
Merge published master into parser
Wrap yy object in a closure wrapper.
Make an evaluating yy.js
Rewrite unassigned expressions as ans-assignments

- renamed yy.js as evaluator.js
Add support for number parsing
Fix evaluator bugs
Make scalars out of floats in parser
Fix variable assignments for evaluating parser
Wire new parser into UI
Add e helper function to multivectors
Add basis vector recognition to evaluator