[pygeoapi] OSGeo AGM project update

[Tom Kralidis]

Hi all: as part of this year's OSGeo AGM [1], I've updated our project
report (slide 73).

I've taken a first pass of items in the last 12 months, but I'm guessing
there are other points?  Please take a look and update accordingly if
you have a chance.

Thanks

..Tom

[1] https://wiki.osgeo.org/wiki/Annual_General_Meeting_2020
[2] https://docs.google.com/presentation/d/1C6llSnWZ28c2aWQgttPiOnoo6dttdqKg07ugU_yr6Uc/edit#slide=id.g5fb9d78caa_21_1