update circle() API

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/ggbio@78484 bc3139a8-67e5-0310-9ffc-ced21a209358
version bump

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/ggbio@78485 bc3139a8-67e5-0310-9ffc-ced21a209358