Vividhues

Misspelt license classifier

**Full Changelog**: https://github.com/KennyOliver/VividHues/compare/v5.2.6...v5.2.7

Accidental extra quote mark in setup.py!

**Full Changelog**: https://github.com/KennyOliver/VividHues/compare/v5.2.5...v5.2.6

README now has a table of VividHues vs competitors.
Made lots of minor tweaks in README

**Full Changelog**: https://github.com/KennyOliver/VividHues/compare/v5.2.0...v5.2.5

Switched to having version in `setup.py` only - for simplicity in GH Actions uploading to pip.

**Full Changelog**: https://github.com/KennyOliver/VividHues/compare/v5.1.1...v5.2.0

**Full Changelog**: https://github.com/KennyOliver/VividHues/compare/v5.0.0...v5.1.0