Updated announce routine prototypes.  Added arc announce routine.
Added image logging for test suite development.
Make Fiducials__process() return a results structure.  Depricate Rviz_Demo.c
Make Fiducials__process()return non-null
Actually set map changed.
Added path to Fiducials__create().
Now use fiducials path to find file names.
Fixed bug in String__format().
Added two level map files.
Merge branch 'master' of https://github.com/waynegramlich/fiducials

Grabs some updates.
Removed fiducials_rviz as a dependancy.
Removed Rviz_Test Rviz_Demo
Add map autosave.
Only publish tags when updated
Merge pull request #7 from trainman419/update_tag

Only publish tags when updated
Changed initialization of Fiducials__Create().
Added image_interesting to Fiducials_Results
Merge branch 'master' of https://github.com/waynegramlich/fiducials

Grabbed latest changes.
Replacing distance per pixel in the tag heights file with the fiducial
size in world units.
Merge branch 'master' of https://github.com/waynegramlich/fiducials