Fixed everything. Test may or may not fail. Helpers do not really work at this point yet. Readme will probably contain wrong information.

Removed JSON2 and IE compatibility crap, removed Java compat stuff
(WTF?!), removed Metadata (might be reintroduced in one form or
another), removed more stuff (i18n etc.), removed all dependencies
(except Handlebars, duh), removed a whole lot of unused/unreached/wtf
code, removed demo (for the time being) since it probably won’t work,
fitted it to my own coding style.

This is not finished yet, there are many TODOs left, helpers might or
might not work, but certainly not auto-import.