2 - Support for 'finally' blocks (Andy Yates)
3 - More documentation and tests (many people)
4 - Sets $@ to the previous value at the beginning of the eval, to allow
5 the capture of an error stack when calling die.
8 - Doc fixes from chromatic
9 - Various minor fixes from Adam Kennedy
10 - Additional documentation and code clarifications
11 - 5.005_04 compatibility