Setting to disable the changelog after update

[rlnt]

Expected Behavior

Don't open a window with the changelog after the plugin updates. Or at least add a setting for it.

Current Behavior

It opens a window with the changelog after updating.

[izhangzhihao]

Please follow #279 (comment)

<application>
  <component name="RainbowSettings">
    <option name="showNotificationOnUpdate" value="false" />
  </component>
</application>

The config path is here: https://github.com/izhangzhihao/intellij-rainbow-brackets#config-file-path