Bump up sbt version to 0.13.9
Bump up sbt version to 0.13.9

Radsaggi/slick,xavier-fernandez/slick,Radsaggi/slick,AtkinsChang/slick,nremond/slick,Asamsig/slick,xavier-fernandez/slick,kwark/slick,marko-asplund/slick,xavier-fernandez/slick,nafg/slick,nremond/slick,trevorsibanda/slick,nremond/slick,AtkinsChang/slick