Change license to BSD for compatibility with Trac core

[Ryan J Ollos]

There is a ticket open for integrating this feature into the Trac core (​t:#8640). In ​t:#3307, which is linked from ​t:#8640, it is proposed that NumberedHeadlines be made available through a macro. I think this is a great idea, and I'd like to do some work on this over the next several months to extend your plugin and add a NumberedHeadlines macro.

However, the discussion in #9768 on GPL vs BSD licenses has me thinking more about which plugin I work on, in particular for a feature like the one I'm suggesting here, since I'd like to leave open the possibility of allowing any work I do to someday be part of the Trac core. The comments on ​t:SeaChange/WhatDevelopersWant describe how licensing issues may prevent integration of plugins to the Trac core.

Would you be willing to change your plugin's license to the BSD license that Trac uses, to ensure full compatibility and possibility of integrating pieces of code from this plugin into the Trac core someday?