updating changelog

CHANGELOG

@@ -31,7 +31,7 @@ https://keepachangelog.com/en/0.3.0/
 	- added a few new Jupyter notebooks
 
 * 0.9.3:
-- Changed the python version requirement to be 3.9+ 
+- Changed the python version requirement to be 3.9+ (using 3.9.9)
 - Restructured the population grid object by splitting off functions that belong in the same category and storing them in a mixin-class within the population_extensions/ dir.
 - merged the HPC branch:
 	- added Condor support