v0.19.0

What's Changed

• Buffalo Classic USB Gamepad (SNES) by @jviskari in #421
• Editor bug fixes (page down, empty file) by @paulscottrobson in #422
• Sound changes (using SDL2_mixer) by @paulscottrobson in #423
• Revert "Sound changes (using SDL2_mixer)" by @paulscottrobson in #424
• Skeleton for editor insert/delete state machine changes by @paulscottrobson in #426
• Support insert/delete lines by @paulscottrobson in #429
• Displays error message on top line by @paulscottrobson in #430

Full Changelog: v0.18.0...v0.19.0