The rule rename wasn't complete - it worked fine, but the feature showed immediately in an overridden state. Beta 4 silently fixes that.
*Important*: please see README.txt if you're upgrading to this release, as the field and rule names changed.
Uses a Rules component rather than a normal rule for price calculation, making it compatible with Commerce's precalculated price system; renamed the rules and fields to avoid future clashes.
Minor change to package field in .info file.
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