Merge branch 'release/0.4.2' into develop
Updated project description [ci skip]
Moved symfony/event-dispatcher to dev dependency.
Housekeeping.
Housekeeping [ci skip].
Testing curl output of rate limiting info.
Added ratelimiting information in travis install phase (fixes #41)
Removed PHP 5.5 from allow_failures list (fixes #50)
Updated changelog and bumped version number.
Merge branch 'release/0.5.0'