v5.16.0

* Don't cancel a mpb.Progress using a context
* Don't recompress non-gzip data without an explicit request
* accept identity tokens from credential helpers
* Add codespell fixes
* Don't initialize a digest.Canonical.Digester if it is not necessary
* Don't compute the (compressed) digest in PutBlob if the caller provides it
* Don't call digest.Digester.Hash() on every digeringReader.Read()
* Pass OriginalDigest and UncompressedDigest to c/storage.Store.PutLayer
* Document that PutBlob callers must only provide validated digests
* Consistently compare docker.Digest with "" without Digest.String()
* Don't unnecessarily compute the blob digest in PutBlob
* copy.Options: semaphore to limit parallel pulls globaly

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

version/version.go

@@ -11,7 +11,7 @@ const (
 	VersionPatch = 0
 
 	// VersionDev indicates development branch. Releases will be empty string.
-	VersionDev = "-dev"
+	VersionDev = ""
 )
 
 // Version is the specification version that the package types support.