doc(FAQ): Add note about GET and POST to same resource
chore: Update changlelog for 0.1.8
chore(tox): Don't run benchmark tests by default

This patch causes tox to not run the benchmark envs/tests by
default, so that contributors can simply run "tox" to test
their patches for correctness across the various versions of
Python.
feat(Response): Add a response helper for setting the Link header

This patch implements an "add_link" method for the Response class that
apps can use to add one or more Link header values to a response.

See also: https://tools.ietf.org/html/rfc5988

Closes #291