4.0

• Converted from python 2 to python 3 for compatibility with latest version of Limnoria
• rewrote the mail handling code to use mailbox.mbox because mailbox.PortableUnixMbox no longer exists
• Now uses the X-Bugzilla-URL email header to determine the source Bugzilla if it's present
• Python packaged installation now available (see README.md for instructions)

3.0.0.1

• Legacy release - old code