- PyPI responses are now cached in Redis for 10 mins. This'll make generation of multiple shields for one package faster once they expire in Varnish.
- Many shields are actually reusable images, so the content of these images is now globally cached on disk, i.e. license and status shields. This means if a package has it's license set to MIT and an MIT license is already on disk, it will use that rather than generate a new one.