Version 2

• Most of the module was rewritten to be more concise and have better error reporting etc.
• The module now exports a class, meaning that it will only run on iojs or Node 4.0.0 or greater.
• The setup routine was moved into a separate setup function, allowing users to wait for the session object to be ready before making use of it. See this section of the documentation.
• Finally, the option to pass in an adaptor function as the connection allows those using other postgres libraries but wanting to use the same client can do so quite easily (e.g. #1). See this section of the documentation.