import mkdocs with dependencies and themes

http://mkdocs.org

Dependencies:

• py3-ghp-import
• py3-mergedeep
• py3-pyyaml-env-tag
• py3-pymdown-extensions

Themes (dependencies):

• mkdocs-alabaster
• mkdocs-bootstrap
• mkdocs-bootstrap4
• mkdocs-bootswatch
• mkdocs-cinder
• mkdocs-cluster
• mkdocs-gitbook
• mkdocs-ivory
• mkdocs-material (mkdocs-material-extensions)
• mkdocs-rtd-dropdown
• mkdocs-windmill
• mkdocs-windmill-dark