Support for _selector filter?

[blakew]

I was excited to find this library but it doesn't seem to support the _selector filter. Is this right?

RE: http://docs.couchdb.org/en/2.2.0/api/database/changes.html#selector

"This is significantly more efficient than using a JavaScript filter function and is the recommended option if filtering on document attributes only."

[blakew]

For a workaround see here cloudant-labs#71