add two basic garbage cleaners
faster loops, more accurate
attempted tests
update tests to not reencode but compare json instead
us vt.parse() to test garbage collected tiles
add cleaner to index.js, update test fixtures
little improvements
add benchmarks for garbage collection
fix benchmark tests
more benchmarks and data for plotting
add another simplified cleaner, improve benchmarks
add comment
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