[pygeoapi] issue sweep and docs sprint first pass

[Tom Kralidis]

Hi all: there will be an overall issues and pull requests sweep
this Friday at 13h UTC [1], followed by a first pass attempt
at moving forward documentation [2].

Please feel free to join us on Gitter.

Thanks

..Tom

[1] https://www.timeanddate.com/worldclock/meetingdetails.html?year=2020&month=1&day=17&hour=13&min=0&sec=0&p1=250&p2=26&p3=16&p4=22
[2] https://github.com/geopython/pygeoapi/issues/277