Merge pull request #6 from jack-oquin/master

rename `compressed` topic `image_raw/compressed`
Added stack dependency on common_msgs.
Merge pull request #7 from jack-oquin/master

Parameter handling fixes
Add teleop node for PTZ.
Add rudimentary teleop node, intended to accompany drive-base teleop systems.
Merging camera_info_manager support from @jack-oquin.
Added fps=0 in command line to force unlimited framerate
Added a TF publisher based on axis-published state
Added a twist command using the continuous move functionality, added the
corresponding teleop node
Added launch files to test the twist facility and the TF publisher
Corrected incorrect manifest
Merge pull request #11 from cedricpradalier/master

Twist input, TF publisher and associated helper files
Corrected frame specification and test file for the publish_tf
Tested on the kingfisher and corrected small mistakes.
Added an example of republish node to generate the raw image
Merge pull request #13 from cedricpradalier/master

Less kingfisher specific code and a bit more polishing on rough edges.
Don't authenticate when no user/pass configured.

When camera is configured for anonymous access username and password is
optional. However, authenticating using the wrong username/password
causes frame rate to drop to 1fps (probably due to auth timeout).
Authentication handler should be optional if no username or password is
configured.