* origin/master: (1373 commits)
  bpo-1635741: Port mashal module to multi-phase init (#22149)
  bpo-1635741: Port _string module to multi-phase init (GH-22148)
  bpo-1635741: Convert _sha256 types to heap types (GH-22134)
  bpo-1635741: Port the termios to multi-phase init (PEP 489) (GH-22139)
  bpo-41732: add iterator to memoryview (GH-22119)
  bpo-40744: Drop support for SQLite pre 3.7.3 (GH-20909)
  bpo-41316: Make tarfile follow specs for FNAME (GH-21511)
  bpo-41720: Add "return NotImplemented" in turtle.Vec2D.__rmul__(). (GH-22092)
  bpo-1635741 port _curses_panel to multi-phase init (PEP 489) (GH-21986)
  bpo-1635741: Port _overlapped module to multi-phase init (GH-22051)
  bpo-1635741: Port _opcode module to multi-phase init (PEP 489) (GH-22050)
  bpo-1635741 port zlib module to multi-phase init (GH-21995)
  [doc] Add link to Generic in typing (GH-22125)
  bpo-41513: Expand comments and add references for a better understanding (GH-22123)
  bpo-1635741: Port _sha1, _sha512, _md5 to multiphase init (GH-21818)
  closes bpo-41723: Fix an error in the py_compile documentation. (GH-22110)
  [doc] Fix padding in some typing definitions (GH-22114)
  Fix documented Python version for venv --upgrade-deps (GH-22113)
  bpo-40318: Migrate to SQLite3 trace v2 API (GH-19581)
  bpo-41687: Fix sendfile implementation to work with Solaris (#22040)
  ...