merge from git

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/flowWorkspace@74290 bc3139a8-67e5-0310-9ffc-ced21a209358
Merge commit 'f7742e493e51599311f7a7dad1e1a13d7fc9b0ab' into trunk
use sample Name instead of numerical indices in [ subset method #69