Log Message:
py-cryptography[_vectors]: updated to 2.7

2.7:
BACKWARDS INCOMPATIBLE: We no longer distribute 32-bit manylinux1 wheels. \ 
Continuing to produce them was a maintenance burden.
BACKWARDS INCOMPATIBLE: Removed the \ 
cryptography.hazmat.primitives.mac.MACContext interface. The CMAC and HMAC APIs \ 
have not changed, but they are no longer registered as MACContext instances.
Updated Windows, macOS, and manylinux1 wheels to be compiled with OpenSSL 1.1.1c.
Removed support for running our tests with setup.py test. Users interested in \ 
running our tests can continue to follow the directions in our :doc:development \ 
documentation</development/getting-started>.
Add support for :class:~cryptography.hazmat.primitives.poly1305.Poly1305 when \ 
using OpenSSL 1.1.1 or newer.
Support serialization with Encoding.OpenSSH and PublicFormat.OpenSSH in \ 
:meth:Ed25519PublicKey.public_bytes \ 
<cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PublicKey.public_bytes> \ 
.
Correctly allow passing a SubjectKeyIdentifier to \ 
:meth:~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier \ 
and deprecate passing an Extension object. The documentation always required \ 
SubjectKeyIdentifier but the implementation previously required an Extension.