* Remove stray reference to `ht_moduleptr`
* Update copyright info
* Remove the new slot for offsets
* Remove note on removed internal functions
* Remove stray reference to Py_TPFLAGS_HEAP_IMMUTABLE
* Rewrite section on passing the "defining class" into C methods.
* Remove proposal for immutable heap exception types. Let's leave those to another PEP
* Restrict METH_METHOD to a single calling convention.
This calling convention should be efficient, so also reduce the Optimization section.
* Set names in monospaced font
* Use `nargsf` for the vectorcall "number of args + flag" argument
* Link "per-module state" to the terminology section
* Adjust link to Marcel's current implementation
* Other minor rewordings
https://github.com/python/peps/pull/1159
Petr Viktorin
Stefan Behnel
Min ho Kim
Nick Coghlan
Serhiy Storchaka
Barry Warsaw
Jeroen Demeyer
Marcel Plch