0.1.0

• Use version number from wireviz_web.__version__
• Add software tests
• Add CI with GitHub Actions
• Use flask-restx instead of flask-restplus
• Parametrize wireviz_web.cli
• Run coverage testing on CI, with Codecov
• Generalize API/core routines
• Adjust error response texts
• Respond with JSON body on 404 errors
• Improve inline documentation
• Run Black and isort
• Move PlantUML API endpoint to /plantuml prefix

Full Changelog: 0.0.0...0.1.0