new experimental module GeocoderAddr, including GeocoderPlugin usage
read_from_fh: new ReturnSeekPosition argument

With test. Will be used for Strassen::Lookup.
test equality of static/method get_global_directives call
new module Strassen::Lookup

This is work in progress, but test file already works.
Needs Tie::Handle::Offset and a somewhat new Search::Dict.
Strassen::Lookup: utf-8 encoding works
documentation for Strassen::Lookup