v2.6.0 — toxiproxy — releases.sh

Gracefull shutdown of HTTP server. (#439, @miry)
Support PATCH HTTP method for Proxy update(PATCH /proxies/{proxy}) and Toxic update(PATCH /proxies/{proxy}/toxics/{toxic}) endpoints. Deprecat POST HTTP method for those endpoints. (@miry)
Client does not parse response body in case of errors for Populate. Requires to get current proxies with new command. (#441, @miry)
Client specifies User-Agent HTTP header for all requests as "toxiproxy-cli/<version> <os>/<runtime>". Specifies client request content type as application/json. (#441, @miry)
Replace Api.Listen parameters host and port with single addr. (#445, @miry)