WIP on bind/set/getattr with hints
this actually works!
confusion about argument order cleared up.
minor wording change
bump VERSION to 2013.09
s/mp_toradix_n/mp_toradix/, (Ben Goldberg)++
Use ok(...) in test.
Add a simple test file exercising encoding and decoding strings.
Fix segfault when decoding a zero-length buffer.
Fix multi-byte decoding bug in Parrot backend.