Castero

**Added**
* Added a new "perspective" - a separate page for viewing your current queue.
You can switch through perspectives by using number keys -- 1 is the primary
perspective, 2 is the queue perspective.
* Added support for a custom download directory.
* Added support for text entry beyond the window width.

**Changed**
* The menu no longer automatically scrolls when playing an episode/feed (but it
still does when you only add the episode/feed to the queue).

**Fixed**
* Fixed a crash when opening the help menu with a short terminal.

**Added**
* Added support for custom keybindings in the config.

**Fixed**
* Fixed an issue where the client would crash if a feed's description or title
field was missing.

**Added**
* Added j/k/l as aliases for seek backward, pause/play, and seek forward,
respectively.
* Added support for inverting the list of feeds or episodes by pressing 'i' in
the corresponding menu. The order of episode lists is preserved, but the order
of the feeds list is not.

**Changed**
* Feeds are now ordered alphabetically.

**Added**
* Added support for saving an entire feed at once.
* Handle -v or --version flag to display version instead of starting the
client.

**Changed**
* Deleting a feed will now delete all of its downloaded/saved episodes.

**Added**
* Downloads will now be handled sequentially rather than in parallel.

**Changed**
* The client now explicitly requires VLC >= 2.2.3
* Revised text description for episodes/feeds with missing copyright tags.

**Fixed**
* Fixed an issue where pressing pause before the media had loaded would not
properly pause it.

**Added**
* You can now delete a downloaded episode by pressing the save key again.
* Added a config option for asking for confirmation before deleting a feed.
* An error will now be raised on startup if dependencies are not met (VLC).
* Number of episodes are now shown in feed metadata.

**Changed**
* The client will no longer try to load media when a player is created. This
substantially improves performance when adding many episodes to a queue.

**Fixed**
* Fixed an issue where config files would not be properly migrated.