Add stomp.py to the project list

Author: jasonrbriggs

_sections/30-projects.md

@@ -56,6 +56,7 @@ for some that aren't directly comparable. -->
 - [gala](https://gala.readthedocs.io)
 - [CIS](https://github.com/cedadev/cis)
 - [cual-id](https://github.com/johnchase/cual-id)
+- [stomp.py](https://github.com/jasonrbriggs/stomp.py)
 
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