MultiMC should now detect aarch64/arm64 architectures and no longer uses
'32' and '64' as CPU architectures.
Detection should work for x86, amd64 and aarch64.
This also affected the old (unused) analytics code, so I removed it.
It is all develop from now on, we no longer make stable releases.
This means no maintenance of version numbers and removal
of all the overhead associated with making stable releases.
MultiMC 6 might have a better system, but with how infrequent and stable
MultiMC releases are getting, there's no need to have a distinction
between `stable` and `develop` anymore.
