Updating proj4 due to a bug in 2.2.
Updating proj4 due to a bug in 2.2.

https://github.com/proj4js/proj4js/issues/129

OpenGeoscience/geojs,Kitware/geojs,Kitware/geojs,OpenGeoscience/geojs,Kitware/geojs,OpenGeoscience/geojs