Rekey

644467b python3 support
9bffffe fix python version

7339f6d simplify iter and kv func, since theyre paired
d72ab6a add list() cast last chance for robustness

a404e0c make imports easier

53fc43a add support for tuples

5049107 bail early if no-op
7fbac90 integrate pluckit's relaxed constraints...and follow suit
8639f05 more tests

119cbf0 gc
370df15 Update README.md
e0a25e6 test some corner cases
c12bc54 massive overhaul of library, preparing it for production. add set support; move builtin modifications into separate, non-default mode; simplify key/value extraction using pluckit library; update and add test coverage
9871f55 upgrade release script