update ci.yml and setup.py for new release

update map_widgets.min.css

Add .readthedocs.yaml and re-minify statics

Add scrollWheel zooming functionality switch to Google Point Widget (#…

…135)

* Add scroll-wheel zooming functionality switch to Google point widget settings

* Added Chinese(ZH) localization files. #133

* update readme files with new version release notes

update README.md

update relase notes with 0.3.3 version changes

Merge remote-tracking branch 'origin/master'

updated readme and version number in setup.py

updated release notes in readme

updated document index