Missing API Functionality

Needed

This is a list of functionality that someone trying to recreate MLTSHP using the API would not able to do.

API requests fail if signature uses SSL (#567)
can't see original poster in user shake (#589)
can't un-like a post (#592)
can't un-save a post (#593)
- to be fair, you can't do this on MLTSHP.com either, you have to go to the shake and click the "x" button, and that doesn't work on your user shake, only group shakes.
can't save a file to multiple shakes (#594)
can't display pagination info (#597)
can't see all shakes an image belongs to (#680)
can't share a video (#681)
can't get user metadata (total views, saves, likes) (#682)
can't get user full name (#683)
can't get followers list (#684)
can't get following list (#685)
can't follow/unfollow a user/shake (#686)
can't get a members list for a shake (#687)
can't invite a user to a shake (#688)
can't join/quit a shake (#689)
can't get a user's announcements list (#690)
can't search (#691)
can't edit a shake (#692)
can't edit authenticated user's profile (#693)
can't create a shake (#694)
can't get conversations list (#695)
can't tell if a user is premium or not (to display the "+" icon) (#696)
can't get a list of shakes you're a member of, only shakes you own (#697)

This is a list of features that were once missing and have now been added.