ignition-gazebo3: update citadel dependencies (#899)
ignition-gazebo3: update citadel dependencies (#899)

* Update brew dependencies

* New nightly release for the changes

* Use fuel-tools3 by now and fix style problems

* ignition-gazebo3: use fuel-tools4

* ignition-gazebo3: update citadel deps bottle.

scpeters/homebrew-simulation,osrf/homebrew-simulation,j-rivero/homebrew-simulation