Support quote

* Fix: progress dialog was dismissed when configuration changes.
* Rename Deserialization and abstract Extractable.
* Rename `list_view_item_padding`.
* Simplify `fragment_post_list.xml`
Clean up code

* Fix the wrong ClassCastException in `ObjectUtil.cast(Object, Class)`.
* Use `ObjectUtil.cast(Object, Class)` instead of instanceof.
Optimize regex pattern
Bump version to v0.2.0-rc1