3

* Add alerts to show what is happening in the UI
* Rename HelloTube class to TextSync (HelloTube was confusing activity authors
  who were using this code)
* Incorporate the gtk.Entry, so that text entered is sent across the Tube
* #4237: improve icon

2

* #4503: Remove Tubes boilerplate and use sugar.presence instead (morgs)
* #4494: Reorder code to make ps.get_preferred_connection call later (morgs)
* Fix logging error (morgs)
* Actually fix offering a tube (smcv)
* Port to new Tubes API (morgs)