CSS Scroll Snap Points Module Level 1

Also see CSS Scroll Snap Module Level 1. It appears the title and shortname of this spec have been changed, and is now being developed at that new location.

2016-03-30: ACTION-2021 Michael to dredge up previous history.
- Brief discussion in 15 April 2015 PF telecon
- Couldn't find any follow-up on list
2016-05-04: ACTION-2034 Janina to review, following on previous review a year ago.
2016-05-18: 18 May 2016 minutes discussed a bit in actions review. ACTION-2040 Foliot to reach out to AI2.
2016-06-29: Further activity should take place on CSS Scroll Snap Module Level 1.