got really nice spec helper working for matching identifiers
add support for +/- unary operators
updated to work in Node or the browser
display full stack trace on error in demo UI
minor styling update to demo UI
account for when there is no stack trace
improved handling of function expressions
throw Error object instead of string
ooh, EmptyStatement
add JSON highlighting
every node has a reference to its parent program
renamed initialize to finalize, added initialize hook

plus added flat collection of all identifiers in a program
fixed issue w/ parameters not getting included...

...for function expressions
a-ha! got type inference to propagate up
don't need that
yes, needed this
couple more little tweaks
typo
what did I do?
you kidding me?