Empty Frame Header Name/Values no handled properly

[gmallard]

The current gem does not handle empty header names and values properly.

Empty names and values should be handled per the Stomp specs:

• For 1.0 empty names are not allowed, and empty headers are not allowed
• For 1.1 and 1.2 empty names are not allowed (but empty values are)

Desired behavior on error (input headers from client or broker):

• Return a error to the client
• Shutdown the connection

[gmallard]

Closed. Refer to the commits listed above.

This will be in the next release.