Merge branch 'master' into y/bstr+x/gpystr

* master: (21 commits)
  time: Redo timers properly
  time: Rearrange code a bit
  libgolang: Adjust and require runtimes to provide semaphores with timeout
  time: test: Add test for stop on func-based Timer
  time: test: Explicitly release Timer/Ticker resources
  golang: pychan: Fix memory leak in .from_chan_* pychan <- chan[X] wrappers
  tox: *-asan: Activate LeakSanitizer on recent CPython 3
  tox: Explicitly use -fno-omit-frame-pointer for ASAN/TSAN builds
  tox -= CPython 3.5, 3.6, 3.7
  tox: Tell it that our trun is ok to run
  gpython: Fix thinko when rejecting unknown -X option
  gpython: Fix `gpython -X gpython.runtime=threads` to spawn subinterpreters with threads runtime by default
  gpython: tests: Factorize test_Xruntime
  golang_str: fix UCS2 builds
  setup: py.bench needs py on py3
  tox += CPython 3.12
  gpython: Fix -V when underlying python is not exactly release
  golang: tests: Fix for Pytest ≥ 7.4
  *: Replace imp with importlib on py3
  pyx.build: Fix build after Cython 3 release
  ...