CruiseMonkey for JoCo Cruise

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* 2018.1.0: Now requires Android 6 or higher. This is the 2018 version for JoCo Cruise on the Oosterdam.
* 2018.1.1: Added a new "Today" view, which shows the date, port, and theme of the day. Also, this release fixes the amenities list to match the Oosterdam.
* 2018.1.2: Fix cleaning out the cache when changing the Twit-arr server. Also fixes the action buttons in the tweet stream.
* 2018.1.3: Fixed deck viewer navigation, plus some amenities updates from THO.