2.0.1.0 ToDoList

[AmanoTooko]

• [x] Automatic read first Tempo event and calculate the BPM
• [ ] 8key and 22key->13key and 37key//waiting for dango
• [x] Realtime change BPM//cancel?
• [x] play and stop logic ,or add a flag
• [x] display note count of track?//cancelled

[AmanoTooko]

UI剩余部分迁移至#5