* Speedups: remove unnecessary cinit
This was meant for (memory) safety, but cython docs clearly state that this
is done automatically. The code generated for cinit with args is what
triggers a 'possible null deref' in clang's static analyzer, so by removing
cinit, we can now use static analysis.
* Speedups: disable pickling ...
... of LocationStore and internal classes.
This reduces code size and avoids accidentally pickling them.
The cython-generated code triggers C4551 on MSVC,
which does not get silenced by pyximport's build flags.
So we silence it on source code level instead.
* Server: allow games with no locations again
* Server: validate locations in pure python implementation
and rework tests
* Server: fix tests for py<3.11
* MultiServer: speed up location commands
Adds optimized pure python wrapper around locations dict
Adds optimized cython implementation of the wrapper, saving cpu time and 80% memory use
* Speedups: auto-build on import and build during setup
* Speedups: add requirements
* CI: don't break with build_ext
* Speedups: use C++ compiler for pyximport
* Speedups: cleanup and more validation
* Speedups: add tests for LocationStore
* Setup: delete temp in-place build modules
* Speedups: more tests and safer indices
The change has no security implications, but ensures that entries[IndexEntry.start] is always valid.
* Speedups: add cython3 compatibility
* Speedups: remove unused import
* Speedups: reformat
* Speedup: fix empty set in test
* Speedups: use regular dict in Locations.get_for_player
* CI: run unittests with beta cython
now with 2x nicer names