Editor: Changed max waypoint delay to 60s, this close #730
Merge pull request #756 from DroidPlanner/issue730

Editor: Changed max waypoint delay to 60s, this close #730
Core: Default land altitude is zero. Close #752
Merge pull request #757 from DroidPlanner/issue752

Default land altitude to zero
Adding event for Misssio Progress Updates and correspoonding case on the
TTS class
Merge pull request #759 from arthurbenemann/issue753

Announce Mission Progress
Version: Releasing version 2.3.2
Merge branch 'master' into release
Release: Update release notesVersion: Releasing version 2.3.2