Release 1.3.6
Fix activity handling of launch mode singleTask applications, like Unity
Merge branch 'master' into network-selection

Conflicts:
	android/sources/src/com/unity3d/ads/android/UnityAds.java
Prevent double hide operations
Merge branch 'master' into network-selection
Release 1.3.7
Merge branch 'master' into network-selection