Issue #20577: move configuration of FormatParagraph extension to new extension
configuration dialog.  Patch by Tal Einat.

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branch : 3.4
Issue #19858:  pickletools.optimize() now aware of the MEMOIZE opcode, can
produce more compact result and no longer produces invalid output if input
data contains MEMOIZE opcodes together with PUT or BINPUT opcodes.

--HG--
branch : 3.4
Issue #15513: Added a __sizeof__ implementation for pickle classes.

--HG--
branch : 3.4