Changelog

• Add soci --version to get the CLI version (#478)
• Remove annotations from subject to preven registries from rejecting certain SOCI indices (#514)
• Add static build options (#476, #623)
• Fix 30s pause in background fetcher during image pull for some images (#550)
• Support docker auth in soci push (#600)
• Skip saving uncompressed layers to disk temporarily during zTOC build (#598)