mwic-0.7.10-bp160.1.9

- update to 0.7.10:
  * Fix --max-context-width.
  * When trimming strings, take grapheme clusters into account.
  * Add new multi-word misspellings to the dictionary.
  * Improve pager support:
    + Don't reset encoding error handler to “strict”.
    + Improve handling errors.
  * Improve the test suite.
  * Use “pytest” in “make test”.
  * Enlarge screenshot.
- mwic.keyring: update with 2023 key from https://jwilk.net/openpgp/