Support wildcards and globs in graphite targets. Check if any of the
values are above/below thresholds.
Use v.first.nil?
Merge remote-tracking branch 'upstream/master' into graphite-wildcard
Merge pull request #424 from DoubleNegativeVisualEffects/graphite-wildcard

Support wildcards and globs in graphite targets. Check if any of the values are above/below thresholds.