fix(isochrone): invalid geometries

feat(api): routes configurable via env (#122)

chore(openapi): add definition link in ui (#121)

feat(capabilities): add INSPIRE fields (#120)

chore(docker): downgrade node version to 16

Update changelog.md

chore(docker): update dockerfile (#118)

Update documentation.yml

Update changelog.md

fix(valhalla-source): wrong default walking speed: 5.1km/h -> 4km/h (#117)

Update version.md for 'main' branch

Update version.md for 'main' branch

Update CONTRIBUTING.md to referenc 'main' branch

Update documentation.yml to follow branch 'main'

Update docker_publish.yml to follow branch 'main'