Fix Python 3.13 compatibility (ST 4201)

[jfcherng]

The latest ST 4201, which replaces py38 with py313, has been released as a private beta in the discord. See discord.com/channels/280102180189634562/650695903446827011/1432613579223339059

SublimeLinter has an import error with py313 because some classes have been moved. This fix works both in py38 and py313.

Traceback (most recent call last):
  File "D:\Download\sublime_text_build_4201_x64\Lib\python313\sublime_plugin.py", line 316, in reload_plugin
    m = importlib.import_module(modulename)
  File "./python3.13/importlib/__init__.py", line 88, in import_module
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 1051, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "D:\Download\sublime_text_build_4201_x64\Data\Packages\SublimeLinter\sublime_linter.py", line 11, in <module>
    from . import log_handler
  File "D:\Download\sublime_text_build_4201_x64\Data\Packages\SublimeLinter\log_handler.py", line 6, in <module>
    from .lint import util
  File "D:\Download\sublime_text_build_4201_x64\Data\Packages\SublimeLinter\lint\__init__.py", line 6, in <module>
    from . import (
    ...<3 lines>...
    )
  File "D:\Download\sublime_text_build_4201_x64\Data\Packages\SublimeLinter\lint\linter.py", line 3, in <module>
    from collections import ChainMap, Mapping, Sequence
ImportError: cannot import name 'Mapping' from 'collections' (D:\Download\sublime_text_build_4201_x64\Lib\python3.13.zip\collections\__init__.pyc)

---

There are still some issues need to be fixed in Package Control though.

Traceback (most recent call last):
  File "D:\_Download\sublime_text_build_4201_x64\Lib\python313\sublime_plugin.py", line 551, in on_api_ready
    plc()
    ~~~^^
  File "D:\_Download\sublime_text_build_4201_x64\Data\Packages\SublimeLinter\sublime_linter.py", line 44, in plugin_loaded
    import package_control.events
  File "D:\_Download\sublime_text_build_4201_x64\Data\Lib\python313\package_control.py", line 22, in <module>
    __loader__ = sublime_plugin.ZipLoader(__zip_path)
                 ^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'sublime_plugin' has no attribute 'ZipLoader'

[kaste]

Thanks. Yes, importing as/from abc is known to work. Released as 4.28.1 Just for information, I can't currently beta test ST, I need high-throughput, high-velocity right now. 🤞