Ignore tag attribute on elements. This attribute was previously last-write-wins, which was less than useless. Since tags are translated into classes, it's best to look at the class attribute.
Fix static style string support. This was trivial in 0.2 since we had an id-identifying character which was illegal to use in Eve strings. In 0.3 we went without this, so I had to do some thinking. I think this should be a fairly robust solution barring watchers injecting EAVs with some exceptionally strange ids.