simple convex method. need ordering
poly ring, but order wrong
ordered lines, need first indx
merge fix
simplify and clean
roxygen
Merge pull request #13 from lwinslow-usgs/master

New way to cluster date/time ranges added
merge conflict
roxygen
working, but catching edge case
Merge pull request #14 from jread-usgs/master

roxy clean up and ~90% footprinter