update notes to include 0.7.2 notes (which was never officially released)
update notes to include 0.7.2 notes (which was never officially released)

sbt/sbt,mdedetrich/sbt,sbt/sbt,xuwei-k/xsbt,xuwei-k/xsbt,xuwei-k/xsbt,sbt/sbt,sbt/sbt,mdedetrich/sbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,jrudolph/sbt-dependency-graph,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt