SEM pdfs, umxPath v1!, umx_explode, Rd changes
Merge branch 'master' of https://github.com/tbates/umx

Conflicts:
	man/RMSEA.MxModel.Rd
	man/umxRAM.Rd
	man/umx_as_numeric.Rd
	man/umx_check_model.Rd
	man/umx_show.Rd
	man/umx_trim.Rd