Major release

* chore: delete left-over debugging code (b903a27)
* chore: run tests on node 7 (acbb808)
* chore: remove old linter config (62c18ce)
* chore: update dependencies (882c74c)
* chore: add an integration test that parses a request (029afdb)
* chore: fix the broken perf test (8ac0e03)
* chore: add a crude memory-profiling script (1ee6f36)
* breaking change: preallocate memory to avoid out-of-memory conditions (18da753)
* feature: implement unpipe (f8a41d2)
