pkg/tar: Add overwrite option to ExtractTar.
pkg/tar: Add PathWhitelistMap to whitelist files for tar extraction.
pkg/tar: Add ExtractTarFileToBuf function to extract a single file to a byte slice.
cas: Change Index interface to return errors on Marshal and Unmarshal.
cas: Add function to extract the image manifest from an image in the store.
cas: add new manifest index.
cas: test: create a real tar.
cas: Save manifest on WriteAci.
cas: Add GetACI function.
pkg: add acirenderer package.