A new "input-filter" branch

Hello again,

On the 25 March telcon, I mumbled on a bit about adding a "filter"
element as a child of input connections for filtering documents. I
created a branch to try it out.

See the "input-filter" branch at

  https://ndw.github.io/specification/

                                        Be seeing you,
                                          norm

-- 
Norman Walsh
Lead Engineer
MarkLogic Corporation
Phone: +1 512 761 6676
www.marklogic.com