Merge pull request #105 from lawinslow/master

fixed issue and added dale's paired heatmap plot
dup check moved to after trunc_time
Merge branch 'master' of github.com:USGS-R/glmtools
v chng
akima skipped
Merge pull request #107 from jread-usgs/master

fix for duplicate date error
Removed duplicate functions.
Trying to make this more deterministic, no unreported errors
can't assume layout should return to matrix(1)