Please provide pinned versions for dependencies

[Deleted user]

I found the following places where things are randomly downloaded from the internet during the build process:

https://github.com/Anuken/Arc/blob/master/arc-core/build.gradle#L90
https://github.com/Anuken/Arc/blob/master/arc-core/build.gradle#L95

Since these downloads are not pinned (we don't expect them to give the same result in the future), it will be very hard to reproduce builds / to build Arc in the future.