0.12.0 - 2018-08-27

X.509 Parser and writer

• x509: Add accessors to most fields of CRT, CSR, and CRL.
  The x509 module can now be used to inspect existing certificates.
• x509: The module now offers basic signing and
  verification capabilities.

API Changes

• pk: from_{PEM,DER,buffer} are now classmethods to
  comply with PEP 543.
• x509: Certificate class renamed CRT.
• x509: start and end arguments renamed not_before and
  not_after; md_alg argument is now digestmod.
• x509: Re-order the arguments of the new() methods.
• exceptions: Rename MbedTLSError -> TLSError to comply
  with PEP 543.

Misc

• pk: __eq__() now also accepts DER (bytes) or PEM (str) formats.
• x509: __bytes__() returns the certificates in the DER format.
• x509: __str__() now returns a human-readable string.