v0.12.0.31 - Spurius Lartius

Spurius Lartius (Roman Consul Prior, 506 B.C.)

• Add out of date version check when running upload or download commands #75.
• Allow a prefix for top level directories to be specified for all commands. Useful to store frameworks built with different Swift versions #83 #82. See Supporting multiple Swift Versions for reference.
• Respect --cache-prefix when saving artifacts to local cache after download
• Respect --cache-prefix when uploading version file to remote