Merge remote-tracking branch 'upstream/master'
Merge pull request #41 from jread-usgs/master

get.Ts function and clean up
Merge branch 'master' of github.com:jread-usgs/LakeMetabolizer
Merge remote-tracking branch 'upstream/master'
simplifying using rLA's get.offsets
Re-roxygen, which keeps our line chars down to fit in the pdfs.