allow for passing a context of evaluation to the importer
allow for passing a context of evaluation to the importer

1ec5/carto,gravitystorm/carto,tomhughes/carto,CartoDB/carto,mapbox/carto,midnightcomm/carto,pnorman/carto,stefanklug/carto,whitelynx/carto,clhenrick/carto,CartoDB/carto,madeinqc/carto