Diffing collections

[Brian Marick]

I've started work on better display of differences between collections,
starting off with Flare. https://github.com/andersfurseth/flare

Flare is built in by default to 1.7.0-SNAPSHOT

The tricky part is going to be integrating such differences into the
collection checkers.

I found Flare's output somewhat confusing at first. Since I'm picky to a
fault about messages, I've been thinking about alternatives. Here's a
sample:
https://github.com/marick/Midje/blob/master/test/implementation/emission/plugins/fim_flare.clj

Comments?