- Update to 2.11.0:
  * Made a number of improvements in SFTP glob support, with thanks to Github
    user LuckyDams for all the help working out these changes!
    * Added a new glob_sftpname() method which returns glob matches together
      with attribute information, avoiding the need for a caller to make
      separate calls to stat() on the returned results.
    * Switched from listdir() to scandir() to reduce the number of stat()
      operations required while finding matches.
    * Added code to remove duplicates when glob() is called with multiple
      patterns that match the same path.
    * Added a cache of directory listing and stat results to improve performance
      when matching patterns with overlapping paths.
    * Fixed an "index out of range" bug in recursive glob matching and aligned
      it better with results reeturned by UNIX shells.
    * Changed matching to ignore inaccessible or non-existent paths in a glob
      pattern, to allow accessible paths to be fully explored before returning
      an error. The error handler will now be called only if a pattern results
      in no matches, or if a more serious error occurs while scanning.
  * Changed SFTP makedirs() method to work better cases where parts of requested
    path already exist but don't allow read access. As long as the entire path
    can be created, makedirs() will succeed, even if some directories on the
    path don't allow their contents to be read. Thanks go to Peter Rowlands for
    providing this fix.
  * Replaced custom Diffie Hellman implementation in AsyncSSH with the one in
    the cryptography package, resulting in an over 10x speedup. Thanks go to
    Github user iwanb for suggesting this change.
  * Fixed AsyncSSH to re-acquire GSS credentials when performing key
    renegotiation to avoid expired credentials on long-lived connections. Thanks
    go to Github user PromyLOPh for pointing out this issue and suggesting a fix.
  * Fixed GSS MIC to work properly with GSS key exchange when AsyncSSH is

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