Own Shader Editor

Features
--------

* Live preview in background or on an extra screen
* Syntax highlighting
* Error highlighting
* Use any shader as live wallpaper
* Exposure of sensors (accelerometer, gyroscope, magnetic field, light,
pressure, proximity)
* Exposure of battery level
* Supports wallpaper offset
* Supports multiple touches
* Supports multiple render resolutions
* Previous rendered frame in backbuffer texture
* Import and use arbitrary textures
* Create and use cube maps
* Disables rendering when battery is low