parse single-quote strings - closes #6
build_parser
move tests to test folder
mochify test - simple
test: get rid of wrapper function
indent test
begin to split up tests
continue to break up tests
finish splitting up tests
merge master: delete runtests script
fix test failures from merge
initial tests for evaluator
evaluator tests: decimals and strings
test build references
test for build parens
test for building function calls
test for addition node