0.19.1

Fixes

• Missing license in sdist by @martinRenou in #1190
• fix: do not include gifs in ipyleaflet source distribution (26mb->27kb) 96e898f
• fix: do not include .yarn dir in jupyter-leaflet source, (54mbmb->1.3mb) d3b07af
• fix: include dist directory for npm release of jupyter-leaflet fd02487

Full Changelog: 0.19.0...0.19.1