Arizen v1.1.5

https://github.com/ZencashOfficial/arizen/releases/tag/v1.1.5
v1.1.5 release note:
- Domain fronting support.
- Fix bug when you want to send 1000ZENs and more.
- Small visual fixes.
- "Show zero balance" checkbox is checked by default for better UX.
- Async calls for API requests.