v1.6 - Color Palette

The Highlights of this update are:

• A brand new Soundtrack made by Alexander Shesha
• New option to customise the Color of the blocks

Other Changes included in this release are:

• Change the block texture from .png to .svg (Thanks to @Eiim)
• added support for the back button in Android
• fixed a few issues

Note: Binaries will follow in the next days