when was the EntityAttributes matcher introduced?

[Tom Scavo]

This MetadataFilter will become my bread-and-butter help desk response:

<!-- consume only InCommon metadata -->
<MetadataFilter type="Whitelist" matcher="EntityAttributes">
    <saml:Attribute
            Name="http://macedir.org/entity-category"
            NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri">
        <saml:AttributeValue>
            http://id.incommon.org/category/registered-by-incommon
        </saml:AttributeValue>
    </saml:Attribute>
</MetadataFilter>

An entity that wants to opt out of interfederation (in a very strict
sense) can add this filter to their MetadataProvider.

My question is: In what version of the Shib SP was this capability
introduced? (This is not clear by reading the wiki.)

Thanks,

Tom