2025.6.20

See PyPI at third-party-license-file-generator/2025.6.20

Fixes

• Fix stupid bug wherein my attempts to optimise setup.py version handling meant you could only practically install the package if's 19 Jun 2025 (was trying to inject version as env var at time of python3 setup.py sdist neglecting the fact that of course, setup.py also runs for all folks installing the package at a later date

Includes everything from the two prior yanked versions:

• Add support for requirements.txt entries using version specifiers other than == (thx @Christian-TD for the bug report)
• Replace distutils.spawn.find_executable with shutil.which (see this PR, thanks @dave-v)
• Add handling for licenses tucked away in *.dist-info/licenses
• Added mechanism to infer license name from license file content (in the case that we only have the latter)