You can clone with
HTTPS or Subversion.
Firefox has a "Web Console" similar to certain Firebug features; we should detect and route "console" methods there when appropriate; right now they're FIrebug or nothing (which goes to GM_log).
Firebug console is recently broken (for @run-at document-start), also. See:
Use the Firebug console when available, otherwise the standard "Web C…