base_link to world transform

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In my state publisher, where I publish my other transforms with RobotStatePublisher::publishTransforms(...), I had to also add RobotStatePublisher::publishFixedTransforms(). Between diamondback and electric, RobotStatePublisher::publishTransforms(...) began to only publish transforms for moving joints. See the functions at line 78 and line 100 in robot_state_publisher.cpp (ignore the incorrect print statement for the second function). In order to publish fixed joint transforms, you must call RobotStatePublisher::publishFixedTransforms().

This problem is also referenced in this post: Why does robot_state_publisher skip publishing fixed joints.