Clamp maximum zoom for the map
Updated vgl
Implemented reset
Fixed test
Fixed centering not working
Updated VGL
Handle type correctly
Fixed improper functionality of gcs to display, fixes #125
By default use osm map tiles
Fixing multiple gl layers not rendering correctly
Fixed transformation
Added convenient methods
Updated VGL
Merge remote-tracking branch 'upstream/clamp_north_south' into gl-line-feature
WIP