Source Code Refactor

[gmallard]

The connection.rb and to a lesser extent client.rb source modules are beginning to reach an insane LOC number.

These modules need to be split into multiple source modules based on public / private method specifications and on what functionality is implemented.

Additionally at some point the entire source tree should be "beautified".

This seems to be a quiet time for the gem, and this effort can be started.

[gmallard]

Expanding the scope of this to include:

• Update all method comments.
• Attempt to regularize use of parens in method definitions
• In particular, comment the Stomp::Error classes
• And comment the tests

[gmallard]

Close, ref above commits.