chunked: add new pull options use_hard_links and enable_partial_images
build(deps): bump github.com/vbatts/tar-split from 0.11.1 to 0.11.2
build(deps): bump github.com/opencontainers/runc from 1.0.1 to 1.0.2
Update golang.org/x/sys
Add LayerOptions.OriginalDigest and LayerOptions.UncompressedDigest
Separate the IDMappingOptions logic from other LayerOptions work
Reorganize uncompressedCounter
Only compute {un,}compressedDigester.Digest() once
Reorganize the "defragmented" reader construction a bit.
Rename {un,}compressedDigest to {un,}compressedDigester
Have NewReadCloserWrapper pass through io.WriterTo
chunked: remove unused args
chunked: fix fd leak on error
chunked: remove unused argument missingDirsMode
chunked: add new pull option use_hard_links
chunked: allow to disable partial images feature
