Tweak README.md

Bump up to 0.8.0

Update cpplint filters

Bump up to 0.6.0

Bump up to 0.5.1

Bump up to 0.5.0

Bump up to 0.4.1

Use a new GitHub Pages action (#673)

Bump up to 0.3.10

Bump up to 0.3.9