Drop redundant jobs on Appveyor to speed up builds
Our Appveyor builds are really slow. We can still get decent coverage if we drop some redundant jobs.
The remaining builds will be:
- 64-bit Windows Server 2016
- 32-bit Windows Server 2012 R2
We can also set fast_finish, so the first failed job terminates the build immediately.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information