Version Upgrade

Updated Gradle version to latest
Updated Kotlin to latest

Migration to Kotlin

We are migrating the library to Kotlin

SelectionListener

Added SelectionListener with onSelectionStart() and onSelectionEnd() methods so that users can now be notified when the color selection started and ended. These callbacks can be used to show visual cues or run some animation (at the end).

POM Update

There is no code changes in this release. The POM file is updated so that the artifacts can be published in mavenCentral()

Base Version

This is the base version with the ability to pick color from any given view.