- Only change key when it is NOT in the 'bindings' Dictionary, otherwise it would be in a state inconsistent with its new hash.
=============== Diff against Environments-cmm.52 ===============
Item was changed:
----- Method: Environment>>renameClass:from:to: (in category 'classes and traits') -----
renameClass: aClass from: oldName to: newName
"Rename the class, aClass, to have the title newName."