splitCssIfIeLimitIsReached: Emit a proper Error object (even if it's an 'info' type message). See #211.
1.7.2
inlineCssImagesWithLegacyFallback: Accept the size threshold as part of an options object.
inlineCssImagesWithLegacyFallback: Added support for specifiying the minimum IE version to support.

Relates to https://github.com/assetgraph/assetgraph-builder/pull/141
jshint.
splitCssIfIeLimitIsReached: Refactored a bit and added support for a minimumIeVersion option.
1.7.3
Fix problem with infinite resolveAssetConfig loop when hitting a special case where the protocol regex doesn't match the protocol
Allow  as part of the protocol when resolving urls. Based on real world  example
Update urltools to 0.1.1.
1.7.4
*.findOutgoingRelationsInParseTree: Always call the superclass' method.
Model HTTP redirects as relations. Closes #51.
Model <meta http-equiv="refresh" content="... url=..."> as a relation.
Added Asset.prototype.isRedirect getter.