v1.0.0-beta.8

新增 CSS2D 支持，你可以使用SDCSS2DObject制作信息点展示等功能，此功能必须手动开启 SDWebglRenderer的css2D为true.
New CSS2D support. You can use SDCSS2DObject to make a point display, etc. This must be manually enabled with the SDWebglRenderer cSS2D set to true

                <SDMesh name="left" :rotation="[0, y1, 0]" :position="[-2, 0, 0]" :scaleXYZ="1">
                    <SDCSS2DObject :style="{background:'gray'}" :position="[0, 1, 0]" >
                        <div class="label">
                            {{ text }} 
                        </div>
                        <!-- any vue components -->
                    </SDCSS2DObject>
                    <SDBoxGeometry :width="1" />
                    <SDMeshBasicMaterial>
                        <SDTextureLoader url="/sandi-ui/img/crate.gif" type="map" />
                    </SDMeshBasicMaterial>
                </SDMesh>