Log request and response objects inside CommonProxy
Don't log responses, they are too large anyway
Merge branch 'feature/commonproxy-logging' into release/3.0.4.0

Conflicts:
	src/OwsProxy3/CoreBundle/Component/CommonProxy.php
	src/OwsProxy3/CoreBundle/Controller/OwsProxyController.php
Merge branch 'develop' into release/3.0.4.0
Added CHANGELOG. Please feed it
Bumped CHANGELOG
Switched to MIT license