0.20.0

What's Changed

• 話者ごとにicon.pngを作る by @Hiroshiba in #69
• merge 0.19.1 by @Hiroshiba in #72
• もち子さんのサンプルボイスが一部逆だったのを修正 by @Hiroshiba in #73
• Revert "話者ごとにicon.pngを作る (#69)" by @Hiroshiba in #74

Full Changelog: 0.19.1...0.20.0