v0.2.1

[ocefpaf]

• update Changelog on master (See Update changelog #390);
• cherry-pick Update changelog #391
• cherry-pick Change Leaflet.awesome-markers url #393
• cherry-pick Fix WMS #404
• address Vega popup #408
• release!

[ocefpaf]

@BibMartin can you review and merge:

#391
#404
#405
#406

After that I will make the release and start working on a better branca-folium release integration for v0.3.0

[BibMartin]

Done. Thanks @ocefpaf for the 4 PRs, and for the (coming soon) release !!

[ocefpaf]

The new release is out https://github.com/python-visualization/folium/releases/tag/v0.2.1

(PyPI and conda packages coming soon...)