Emit the new local_query
tuple only if query options are set
#451
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Why
Using the new tuple isn't compatible with older versions of Ra. This breaks local/leader queries if there are Ra members running an old version.
How
We don't need the new
{local_query, QueryFun, Options}
tuple if there is no options. We can use the old{local_query, QueryFun}
in this case and keep the compatibility.