v0.1.0

First release

Highlights:

• All the health-related metrics are exported by node-group (to be fair, C.Autoscaler works with AutoScalingGroups instead). All of them are prefixed with cluster_autoscaler_status_. This could be configured with a flag in following versions.
• Docker images are being created for several architectures: linux/amd64, linux/arm64, linuxs390x, linux/ppc64le for those having special servers out there