AMQP-CPP 1.0.1

Changelog:

• If connection.close() was called before the connection was set up.
• Use generic g++ version, and not 4.8 explicitly in makefile.
• Initialized a number of unused and deprecated variables to zero.
• Login object now has methods to retrieve user name and password.
• Keep a local copy of the string in the envelope.
• Copy constructor added to Login class.