Second try at making heart pulse. Go faster, stay coloured.
FEATURE: custom emojis
FIX: use cache to store custom emoji
FIX: custom emoji weren't properly baking
FEATURE: remove override stylesheet option, too confusing
FIX: stable ordering for site customisations
FEATURE: more than 1 site customization can be enabled at once
FIX: more robust site customizations

Rewrote site customization to use distributed cache and a much cleaner
css delivery mechanism
correct live reload code
FIX: no way to remove site text
FIX: buggy unhoisting of escaped \*
FIX: load custom emoji API before the plugins
add back  ade-soft CSS transition on post actions
standardize on @transition mixin
just use plain CSS3 transition