Kotlin

It'd be good to do an overall check to make sure these are all still the current standards we use.

On a quick glance through, I noticed there aren't any guidelines regarding Kotlin. The Android code style guide linked to is only for Java.

Thoughts @mshipton @jarekankowski @kikyoungkwon @forrestpangborn @Shilaghae ?

cc: @francuda

[mshipton]

For existing projects we are using Android Studio code rules that are based on this:

https://kotlinlang.org/docs/reference/coding-conventions.html