* dev:
  Fix version in status overview and add next version tag
  Add ignore list and ignore .idea folder
  Update structure.md to include both UML images
  Add UML-CD for subnamespace Basic
  Reformat structure UML-CD
  Extract inline PlantUML to own file and embed image instead
  Add page structure using PlantUML in doc/
  Extract projects status to own file in doc/
  Extract section from README into subpage
  Explain concepts Foldable and Windable in README
  Safelist version tags for Travis CI
  Include Travis badge for latest version tag into README