better screen version

similar to https://github.com/bmuyl/theFuckingManual ([rendered](https://bmuyl.github.io/theFuckingManual/))

see also
https://github.com/manubot/manubot
https://github.com/manubot/rootstock
https://github.com/greenelab/meta-review

hypothesis should be optional = default off

add menu for navigation

allow to collapse/expand sections
