vote_scope for like functionality:
https://github.com/yshmarov/superails/commit/e4ea4f2bde0d3b5d9a44948868992fde93f5b18a
bookmarks with acts_as_votable:
https://github.com/yshmarov/superails/commit/49baa0b9cd0e147d927f9e776656b7999bb0911a
add cached like votes to posts:
https://github.com/yshmarov/superails/commit/8da73df763dba253f3cf7381daef72879550ea06
add to watchlist, mark as complete:
https://github.com/yshmarov/superails/commit/fc78b24336a5ce1f8b5312093d98f6dd217b785b
styling new like buttons:
https://github.com/yshmarov/superails/commit/abfb659a742c24d732991aa8b94529c0126f253f
better way to display upvoters and downvoters of a post:
https://github.com/yshmarov/superails/commit/99553d833824e7d73229bae2f24f4c467f718459