fix animation clear
modify bone transform
add text type
Merge branch 'refactoring' of https://github.com/DragonBones/DragonBonesCPP into refactoring
Merge branch 'refactoring' of https://github.com/DragonBones/DragonBonesCPP into refactoring
Merge pull request #63 from lite3/refactoring

fix some bug and add some method
Merge branch 'refactoring' of https://github.com/DragonBones/DragonBonesCPP into refactoring
fix typo
fix timeline key frame update delay bug
fix color transform animation bug
add textdata scale9grid data
fix color transform animation bug
Merge branch 'refactoring' into myrefactoring