Library
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+ - Issue #22338: Fix a crash in the json module on memory allocation failure.
+
+- Issue #12410: imaplib.IMAP4 now supports the context management protocol.
+ Original patch by Tarek Ziadé.
+
+- Issue #16662: load_tests() is now unconditionally run when it is present in
+ a package's __init__.py. TestLoader.loadTestsFromModule() still accepts
+ use_load_tests, but it is deprecated and ignored. A new keyword-only
+ attribute `pattern` is added and documented. Patch given by Robert Collins,
+ tweaked by Barry Warsaw.
+
- Issue #22226: First letter no longer is stripped from the "status" key in
the result of Treeview.heading().