Unreal Engine 4.19.0 Compatible Plugin

Updated version and readme file.

Unreal Engine 4.18.0 Compatible Plugin

Updated version.

Unreal Engine 4.17.0 Compatible Plugin

Updated readme & plug-in descriptor.

Unreal Engine 4.16.0 Compatible Plugin

Updated readme.

Unreal Engine 4.15.0 Compatible Plugin

Updated readme.

Unreal Engine 4.14 Compatible Plugin

Added array versions of per-key BP functions.