Merge branch 'release/v1.5' of http://github.com/PaddlePaddle/PaddleHub into release/v1.5

.github/ISSUE_TEMPLATE/----.md

 ---
 name: 需求反馈
 about: 需求建议
-title: "[Feature]"
+title: ''
 labels: ''
 assignees: ''
 

.github/ISSUE_TEMPLATE/bug--.md

 ---
 name: BUG反馈
 about: PaddleHub Bug反馈
-title: "[BUG]"
+title: ''
 labels: ''
 assignees: ''
 

docs/release.md

 # 更新历史
 
+## `v1.5.2`
+
+* 优化pyramidbox_lite_server_mask、pyramidbox_lite_mobile_mask模型的服务化部署性能
 
 ## `v1.5.1`
 

paddlehub/version.py

@@ -13,5 +13,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """ PaddleHub version string """
-hub_version = "1.5.1"
+hub_version = "1.5.2"
 module_proto_version = "1.0.0"