v2.0.0 Open Channel

* OpenChannel
<OpenChannel /> is the component where conversation between the users
happen.
It is similar to <Channel /> component among group channel components.

* OpenChannelSettings
<OpenChannelSettings /> works as the configuration component for open
channel OpenChannelSettings

* A set of selectors for OpenChannel operations

Author: Sravan S

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "sendbird-uikit",
-  "version": "2.0.0-alpha.2",
+  "version": "2.0.0",
   "description": "React based UI kit for sendbird",
   "main": "index.js",
   "typings": "index.d.js",