Log Message:
py-OpenSSL: updated to 19.1.0

19.1.0:
Backward-incompatible changes:
- Removed deprecated ContextType, ConnectionType, PKeyType, X509NameType, \ 
X509ReqType, X509Type, X509StoreType, CRLType, PKCS7Type, PKCS12Type, and \ 
NetscapeSPKIType aliases.
  Use the classes without the Type suffix instead.
- The minimum cryptography version is now 2.8 due to issues on macOS with a \ 
transitive dependency.

Deprecations:
- Deprecated OpenSSL.SSL.Context.set_npn_advertise_callback, \ 
OpenSSL.SSL.Context.set_npn_select_callback, and \ 
OpenSSL.SSL.Connection.get_next_proto_negotiated.
  ALPN should be used instead.

Changes:
- Support bytearray in SSL.Connection.send() by using cffi's from_buffer.
- The OpenSSL.SSL.Context.set_alpn_select_callback can return a new \ 
NO_OVERLAPPING_PROTOCOLS sentinel value
  to allow a TLS handshake to complete without an application protocol.