Reinstate max file size, but bump up to 10mb, per @domoritz
Reinstate max file size, but bump up to 10mb, per @domoritz

vega/vega-lite-ui,uwdata/vega-lite-ui,vega/vega-lite-ui,uwdata/vega-lite-ui,uwdata/vega-lite-ui,vega/vega-lite-ui