v0.0.71
- add static/robots.txt, disabling crawling of /api/
- re-root content-specific endpoints under /api/1/content/
- fix not converted empty bytes string
- /revision/origin/: Make the timestamp default to the most recent visit
- api: simplify HTML layout by dropping redundant nav and about page
- apidoc: document correctly endpoints /content/known/,
/revision/{origin,origin/log}/ and /stat/counters/