Updated NEWS to describe minor changes to RailTrail and plans for deprecation of CMU OLI datasets.
converted from Sweave syntax to pure knitr
ignore .Rproj files
using roxygenise() instead of document() for now
some clean-up; prep for plotFun with overlays
  * better color handling
  * plotFun uses panel.plotFun directly
  * still experimenting with parameters in functions
trying get rid of documentation errors (S4 stuff)
added documentation for idx in plotFun
bug fix in rows(); now handles 0 rows
working toward simultaneous addition of multiple functions to a plot.

issue: factors getting converted to numeric...
aggregation meta functions -- needs work, documentation
moved old aggregating.R into sandbox
moved misplaced examples
renamed (non-aggregating) favstats to fav_stats
loading methods and utils as per roxygen2 bug
moved OLI data into sandbox
working on aggregating
Minor changes to documentation.
Minor changes to dataset documentation and examples for googleMap().
finally checking in stuff from Smith era work
put manipulate code into \dontrun{}