docs(release): changelog for v0.12.0

Author: weakish

Changelog.md

@@ -1,31 +1,9 @@
 
 0.12.0 发布日期：2020-04-20
 ----
-Merge pull request #134 from juvenn/file-callback
-Merge branch 'master' into file-callback
-fix(file): typo
-Merge pull request #172 from juvenn/feat/auto-doc
-remove docs before building
-Merge branch 'master' into feat/auto-doc
-Merge pull request #203 from weakish/convAddedRemovedHook
-feat(engine): _conversationAdded/Removed hooks
-Merge pull request #201 from weakish/prepare-release-0.12.0
-docs: update doc via apigen
-docs: prepare to release 0.12.0
-Merge pull request #200 from leancloud/php-7.4
-:heavy_plus_sign: Run tests on PHP 7.4
-feat: add _rtmClientSign hook (#199)
-feat: add _rtmClientSign hook
-feat: smooth push (flow_control) (#196)
-feat: smooth push (flow_control)
-Update doc when release
-Invoke fileCallback after file uploaded (or failed so)
-
-0.12.0 发布日期：2019-12-30
-----
 
 * 支持平滑推送（`flow_control`）
-* 支持即使通讯服务的 `_rtmClientSign` hook
+* 支持即时通讯服务的 `_rtmClientSign`、`_conversationAdded`、`_conversationRemoved` hook
 * 支持 PHP 7.4
 
 0.11.0 发布日期：2019-10-25