Oyakodon for Mastodon

Mastodon client app supporting multi-instance.
You can switch mastodon instance just with swiping screen.

[How to use]
 - To register an instance, input a server address.
  e.g. "securitymastod.one", "mstdn.jp", etc...
 - To switch registered instances, swipe the screen.
 - To switch timeline views, just tap a tab.

[Note]
 - Maximum 3 instances are able to be registered.
 - You can find instances here.
　https://instances.mastodon.xyz
 - Let me know any issues at the following website.
　Twitter : https://twitter.com/takeyasu
　mstdn.jp : https://mstdn.jp/@isaotakeyasu
　Blog : http://tech-en.andhandworks.com/

If you find any issues, please let me know the following information.
  - Mastodon instance name
  - Using account linkage or not
  - iOS version (e.g. iOS10.3)
  - iPhone/iPad device version (e.g. iPhone7, iPad Air, etc...)