lower required test coverage threshold
lower required test coverage threshold

see discussion in:

  https://github.com/lostisland/faraday_middleware/pull/98

lostisland/faraday_middleware,ShaneWilton/faraday_middleware,lostisland/faraday_middleware,pferdefleisch/faraday_middleware,tinfoil/faraday_middleware,h4ck3rm1k3/faraday_middleware,austinrfnd/faraday_middleware,tinfoil/faraday_middleware,h4ck3rm1k3/faraday_middleware,austinrfnd/faraday_middleware,ShaneWilton/faraday_middleware,pferdefleisch/faraday_middleware