Add respond_to? method definition for search panes
Update riddle dependency to current edge
Merge remote-tracking branch 'groe/patch-2'
method_missing on Glaze is private again, plus specs for respond_to?

Also, it's worth noting that calling 'super' in respond_to? will fire method_missing anyway, as there's no underlying implementation in a BasicObject instance. A little confusing, but that's just the way life is.