openlayers/ol3 — pull request #202 by twpayne (2013-02-19 08:18:53+00:00)
Title: Proj4js should not have to be global

https://github.com/openlayers/openlayers/pull/538 changed OL2 so that Proj4js no longer had to be global var. Looks like OL3 has reintroduced this requirement