Armoria API Update: custom coat of arms

Hello. Here is pretty tricky update for Armoria API. It was generating random coat of arms, but now I've added an ability to get COAs created in Armoria GUI. So you can make a request like below and it will always produce the coat of arms you want, not a random one.

https://armoria.herokuapp.com/svg/500/belarus

See documentation for the details. In can be pretty hard to use, so please read carefully.