docs: release 2.3.0 (#429)

docs: release 2.3.0

Author: weakish

changelog

@@ -1,3 +1,8 @@
+## [2.3.0] - 2019-12-02
+### Added
+- support for Android Key (`LEANCLOUD_APP_ANDX_KEY`) in LeanEngine
+- push.send: new param `flow_control`
+
 ## [2.2.0] - 2019-10-24
 ### Added
 - _clientOnline and _clientOffline hooks

setup.py

@@ -25,7 +25,7 @@
 
 setup(
     name='leancloud',
-    version='2.2.0',
+    version='2.3.0',
     description='LeanCloud Python SDK',
     url='https://leancloud.cn/',
     author='asaka',