v0.1.2

Changes:

• [GUI] optimize background drawing method
• [GUI] remove links in About dialog (because they barely work)
• Clamp effect values to 0
• Separate version to work with Prism's modified sound engine (-pkpr); this version adds support for 0xy (arp), 1xx (pitch up), 2xx (pitch down)

Built using Nim 1.6.14 (--mm:arc).