Store certs in cerficate_list as structures ASN1Cert objects
Build Certificate message as bytes
Add support for building handshake messages with certificates as bytes
Construction method for CertificateRequest
More tests
Construct a handshake record with CertificateRequest as bytes
Use constants
Test the NotImplemented messages as bytes
Add as_bytes() methods to ServerHelloDone and HelloRequest -- to better generalize once all the NotImplementedErrors are gone
Parse alert records
Fix the value of AlertLevel.Warning
Merge pull request #50 from ashfall/alert-records

Parse Alert messages
Merge pull request #46 from ashfall/construct-handshake-as-bytes

Construct Handshake as bytes