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bpo-31488: IDLE - update former extensions when options change. (#3612)

When apply changes, call .reload on each class with non-key options.
Change ParenMatch so that updates affect current instances.
T
Terry Jan Reedy committed
5777ecc438790f3d324d52f2ccdad56e667e0cb3
Parent: 3f9eee6
Committed by GitHub <noreply@github.com> on 9/16/2017, 5:42:28 AM