error handling adjustments, including showing failing task in red (for #29)
error handling adjustments, including showing failing task in red (for #29)

sbt/sbt,sbt/sbt,Duhemm/util,xuwei-k/xsbt,sbt/sbt,sbt/sbt,xuwei-k/xsbt,mdedetrich/sbt,mdedetrich/sbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,mdedetrich/sbt,sbt/sbt,xuwei-k/xsbt,mdedetrich/sbt,xuwei-k/xsbt,xuwei-k/xsbt,sbt/sbt,mdedetrich/sbt