downspout v0.3.0

Linux x86_64 VST3 release build for v0.3.0.

Included plugin bundles:

• bassgen.vst3
• p_mix.vst3
• e_mix.vst3
• rift.vst3
• drumgen.vst3
• cadence.vst3
• gremlin.vst3
• gremlin_driver.vst3
• ground.vst3

The .sha256 asset contains the checksum for the zip.