** NOTE **
From this version, only Python versions 3.10-3.13 are (officially)
supported, with pre-built wheels supplied.

UTL4-9: Add new file signatures
- The following file signature tests have been added to the futils module,
  with aliases added to the utils module:
  - is7zip
  - isgzip
  - ispdf

Other changes:
- References to Python 3.7 changed to 3.10.

Testing:
- Testing completes successfully with all modules passing and 100% code
  coverage.
- Pylint completes successfully with all modules reporting 10/10.

Released: 2025-09-20