fix the bug that when getting limits

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/ggbio@74575 bc3139a8-67e5-0310-9ffc-ced21a209358
bump version 

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/ggbio@74576 bc3139a8-67e5-0310-9ffc-ced21a209358