Post to https://github.com/w3c/editing/issues/166 for review

[BoCupp-Microsoft]

@Reinmar gave a range decoration presentation at TPAC 2018 which this work is relevant to. Let's post to this issue discussing the topic when we have addressed some of the other open issues so we can have him and others on that issue review it.

[Reinmar]

Hi! I'm still slowly processing my own feedback from various discussions on TPAC and opening tickets for those things. Great to see that you worked on the range highlighting feature :) Once I'll get back to this topic I'll make sure to sync my actions with you because your explainer is definitely a good start.