OneAdder/lingtypology: Release 0.8.4

Improvements lingtypology.db_apis module renamed to lingtypology.datasets. Alias to maintain backwards compatibility will remain for the time being (until 0.9 or 1.0 release). Certain usability improvements such as colors attribute in multiple lingtypology.LingMap methods that changes colors or stroke_colors attributes. For more info consult the docs. Bugfixes Fixed a bug when links to Glottolog in popups were not rendered correctly with minicharts. Multiple code quality improvements such as accordance with pep8 and removing duplicate code