[presentation-api] new commits pushed by mfoltzgoogle

The following commits were just pushed by mfoltzgoogle to https://github.com/w3c/presentation-api:

* Clarify self-navigation behavior in a presentation. (#461)

* Be specific about navigation

* Revert

* Restore changes

* Address feedback
  by Mark Foltz (Google)
https://github.com/w3c/presentation-api/commit/fad892375b9eaba675572fae7b1efef6c741f70a

Received on Friday, 5 April 2019 19:54:40 UTC