refactor IDisplayer
refacctor IDrawTask and DrawHandler
ScrollDanmaku: improve stability of scrolling
L2RDanmaku & R2LDamaku: bug fixed
DrawHandler: .
Update Sample
DanmakuTextureView: bug fix
Merge branch 'dev-scrolling-stability'
disable stability-scrolling
Sample: change to DanmakuTextureView for debuging
IDrawTask: add requestClear method
DanmakuTextureView : fix "canvas aleady locked" issue
Sample: revert to DanmakuSurfaceView