remove cleaner_change_index, make _singlefeatloop canonical, fix benchmarking
fix ordering of values in cleaner
update test fixtures for new cleaner function
Remove protobuf parsing from bench
Add cleaner2 with simplifications
JSON parse as a cheap copy
test all the tests, know how many features
update cleaner and tests
remove cleaner2
Merge pull request #28 from mapbox/garbage

Garbage collector
Update readme.md
add parameters docs
Update parameters.md
fix ordering by numeric things
add sort param to tests
test ordering by strings and numbers
Merge pull request #29 from mapbox/fix-orderby

fix orderby
Merge branch 'master' into collect
move unbucketing outside of feature loop so we end up with fewer features not more