Changelog

Version 2.0 - June 8th 2018

Replace Android support libraries with Android X libraries (Hello World, AndroidX)[https://android-developers.googleblog.com/2018/05/hello-world-androidx.html]
Upgrade Gradle build tools to version 3.2.0-alpha17
Upgrade Bintray Gradle plugin to version 1.7.3
Upgrade Maven Gradle plugin to version 2.0

Version 1.4 - January 17th 2017

Upgrade Robolectric version to 3.2.1
Fix how GroupViewHolder's expand and collapse method are called
Avoid unnecessary conversion between ExpandableListPosition and group index
Add layout for each sample activity
Only update children check states if group is expanded
Update how clearChoices() propagates view updates
Remove unnecessary check for only CheckedTextView and toggle everything in CheckableChildViewHolder
Update ExpandActivity sample to turn off flash animation

Version 1.3 - December 15th 2016

Add ability to programmatically toggle group using group
Only expand / collapse groups if they have items
Properly deserialize expandable group from Parcel

Version 1.2 - November 14th 2016

Ensure onSaveInstanceState is saving a java.util.ArrayList
Replace SparseBooleanArray with Boolean Array in CheckedExpandableGroup
Replace SparseBooleanArray in favor of Boolean array in ExpandCollapseController

Version 1.1 - October 13th 2016

Upgrade Gradle build tools to version 2.2.0
Fix bug where expand and collapse were reversed in GroupViewHolder

Version 1.0 - August 16th 2016

Initial Release