2014/04/27 v.0.6: fixed installation issues for older python versions (thanks to
https://github.com/mlaloux), enhanced list of basemap-providers (thanks to:
https://github.com/leaflet-extras/leaflet-providers/)
2014/04/26 v.0.5: new control for full map support, optimized UI (thanks to
https://github.com/mtravis), correct attribution for basemaps, new css file
creation
2014/04/25 v.0.4: new layer control for features (thanks to
https://github.com/RCura), new GUI with extent setting possibility
2014/04/24 v.0.3: new ui with dimension choice for webmap, enhanced html
structure for better readability
2014/04/23 v.0.2: basemap choice, popups in leafletmap
2014/04/22 v.0.1
