2021-05-09 added screenshots
2021-05-08 index page now uses twig
2020-06-10 added 'Stolpersteine in Bonn'
2020-06-02 added 'Recycling in Bonn'
2020-05-31 added 'Trees in Bonn'
2020-05-30 selected districts of Bonn are shown in color, everything else is dimmed out
2020-05-29 use minimized files
2020-05-27 Local, pre-rendered tiles
2020-05-26 Added grayscale rendering to maps
2020-05-25 Maps now have maximize buttons
           'OSM Map of Porto' now uses layer selector
2020-05-24 First version of the site