docs: release notes of 2.8.1

Author: weakish

changelog

@@ -1,3 +1,7 @@
+## [2.8.1] - 2020-10-21
+### Changed
+- Remove deprecated internal interface invocation when saving external files.
+
 ## [2.8.0] - 2020-07-15
 ### Added
 - `request_change_phone_number` and `change_phone_number` to verify mobile number *before* updating it.

setup.py

@@ -26,7 +26,7 @@
 
 setup(
     name='leancloud',
-    version='2.8.0',
+    version='2.8.1',
     description='LeanCloud Python SDK',
     url='https://leancloud.cn/',
     author='asaka',