Log Message:
Update to 1.48

Upstream changes:
1.48  2022-08-09 MANWAR
      - More contributions by @shawnm.
       a) pull request #11
          Support use XML::XPath some_version; and modernize inheritance.
       b) pull request #12
          Add documentation about supported XPath functions.

1.47  2022-05-13 MANWAR
      - Another bunch of patches, thanks @shawnm.
        a) Get the encoding used for command line arguments from
           the environment.
        b) Don't assume standard input and output are UTF-8; also
           get their encoding from the environment.

1.46  2022-05-12 MANWAR
      - Added missing unit test (t/52matches.t)
      - Added missing unit test (t/cleanup.t)
      - Added unit test for MANIFEST (t/manifest.t)

1.45  2022-05-12 MANWAR
      - Added XPath function matches(), thanks @shawnw.