Update version in docs

Author: SamProkopchuk

doc/source/conf.py

@@ -23,7 +23,7 @@
 author = "Bradley Steinfeld, Sam Prokopchuk, James Reeve"
 
 # The full version, including alpha/beta/rc tags
-release = "0.19.3"
+release = "0.20.1"
 
 
 # -- General configuration ---------------------------------------------------