Changes from 1.9 to 2.0

 // === Class name changes === //
 scene::Entity -> scene::Mesh
 scene::Sprite -> scene::Billboard
 
 // === Function name changes (scene::SceneManager) === //
 createPivot -> createMesh
 createModel -> createMesh
 loadModel -> loadMesh
 saveModel -> saveMesh
 createSprite -> createBillboard
 getEntityList -> getMeshList
 getSpriteList -> getBillboardList
 
 // === Function name changes (scene::Mesh) === //
 selectSurface -> setActiveSurface
 
 // === Enumeration entry name changes === //
 NODE_ENTITY -> NODE_MESH
 NODE_SPRITE -> NODE_BILLBOARD
 
 ENTITY_CUBE -> MESH_CUBE
 ENTITY_SPHERE -> MESH_SPHERE
 ...
 
 MODEL_SPM -> MESHFORMAT_SPM
 MODEL_3DS -> MESHFORMAT_3DS
 ...
 
 SCENE_SPS -> SCENEFORMAT_SPS
 SCENE_BSP -> SCENEFORMAT_BSP