Add CHANGELOG
Add MIT license
Fix whitespace; correct license
v1.0.0
Remove 'fork' image

The project site is in a gh-pages branch so this shouldn't be in the
main branch.
Override any `a:visited` color style

If `a:visited` has a color style, it should not change the button color.
Add a test file

Simple HTML test for each button class and different elements.
Optimize icons image
Update CHANGELOG
Tidy up README