Add ol.vec.Mat4.makeTransform2D
Use ol.vec.Mat4.makeTransform2D in ol.renderer.canvas.ImageLayer
Use ol.vec.Mat4.makeTransform2D in ol.renderer.canvas.Layer
Use ol.vec.Mat4.makeTransform2D in ol.renderer.canvas.TileLayer
Use ol.vec.Mat4.makeTransform2D in ol.renderer.dom.ImageLayer
Use ol.vec.Mat4.makeTransform2D in ol.renderer.dom.TileLayer
Use ol.vec.Mat4.makeTransform2D in ol.renderer.Map
Use ol.vec.Mat4.makeTransform2D in ol.renderer.webgl.TileLayer
Rename ol.vec.Mat4.equal2D to ol.vec.Mat4.equals2D
Use ol.vec.Mat4.equals2D in ol.renderer.dom.ImageLayer
Use ol.vec.Mat4.equals2D in ol.renderer.dom.TileLayer