* Implement feature #145 Option to use system accent color.
  Go to Settings / Theme then select Accent in Theme list.
* Implement feature #174 Add an ability to block/filter out accounts.
  Go to Settings / General / Feed, select Exclusions in feed then add usernames.
* Implement feature #240 Retrieve more tweets on search.
  By keeping scrolling there are new requests automatically made.
* Implement feature #242 Rearrange subscriptions\pin favorite subscriptions to top.
  On the Subscriptions page, simply drag each subscription to the desired position.
