Release 9 8 0 (#724)

* Release 9.8.0

* Update release notes

* add a comment to refer core lib

* change comment style

Author: KazuCocoa

CHANGELOG.md

@@ -3,6 +3,21 @@ Commit based release not is [release_notes.md](./release_notes.md)
 
 Release tags are https://github.com/appium/ruby_lib/releases .
 
+## v9.8.0
+
+### 1. Enhancements
+- Add start/stop recording screen [#674](https://github.com/appium/ruby_lib/issues/674)
+- replace core directory to core library [#665](https://github.com/appium/ruby_lib/issues/665), [#718](https://github.com/appium/ruby_lib/pull/718)
+    - No change for users
+
+### 2. Bug fixes
+
+### 3. Deprecations
+- `ap_` prefixed logging
+- `source_window`: use `get_source` instead
+- `ios_version`: use `platform_version` instead
+- `current_app`: use `current_activity`, for example to know current app.
+
 ## v9.7.5
 
 ### 1. Enhancements

contributing.md

@@ -2,6 +2,8 @@
 
 For features or bug fixes, please submit a pull request. Ideally there would be a test as well. The remainder of this doc details how to run the tests.
 
+If you'd like to adding new driver commands, please refer to https://github.com/appium/ruby_lib_core
+
 ## Tests
 
 - Tests are run against [appium's master branch](https://github.com/appium/appium/blob/master/docs/en/contributing-to-appium/appium-from-source.md)