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+Features
+   * Added partial support for parsing the PKCS #7 cryptographic message
+     syntax, as defined in RFC 2315. Currently, support is limited to the
+     following:
+     - Only the signed data content type, version 1 is supported.
+     - Only DER encoding is supported.
+     - Only a single digest algorithm per message is supported.
+     - Only 0 or 1 certificates are supported per message, which must be in
+       X.509 format.
+     - There is no support for certificate-revocation lists.
+     - The authenticated and unauthenticated attribute fields of SignerInfo
+       must be empty.
+     Many thanks to Daniel Axtens, Nayna Jain, and Nick Child from IBM for
+     contributing this feature. Thanks to Demi-Marie Obenour for contributing
+     various improvements, tests and bug-fixes.