todo.txt

simplify collision meshes
improve/bake materials
research pros/cons of using world versus urdf files
replace maze and pipeline with single URDF each
update maintainer/author info in package.xml et al.
update copyright details in models.* et al.
if necessary, update README to state uuv_simulator should be built in same workspace
if necessary, address error: "Can not find the XML attribute 'version' in sdf XML tag for model: X. Please specify the SDF protocol supported in the model configuration file. The first sdf tag in the config file will be used "