add more latex extensions to ignore (suggested by Jorge A. Alfaro-Murillo)
add more latex extensions to ignore (suggested by Jorge A. Alfaro-Murillo)

DrXyzzy/smc,tscholl2/smc,sagemathinc/smc,sagemathinc/smc,DrXyzzy/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc,tscholl2/smc,tscholl2/smc,sagemathinc/smc,tscholl2/smc,sagemathinc/smc