2013-01-10 -------------------------------------------------------------------
* CME - NEW merge.rspec function to combine separate rspec objects
* CME - added ability to aggregate spectra by multiple vectors. For example, a
user can calculate average spectra by species and sex using by=list(species,sex) with
aggspec)
* CME - peakshape now gives plot titles as names of spectra (from column ids) and
user can specify ask=TRUE to only plot one spectrum at a time (useful for batch
analyses)
* CME - peakshape bug fixes

2012-12-21 -------------------------------------------------------------------
* CME - fixed peakshape bug; in previous version, duplicate column names resulted in an error

2012-12-19 -------------------------------------------------------------------
* RM - explorespec 'free' argument fixed, was not working
* CME - fixed the way S5 is calculated in summary.rspec; segments now divided by total reflectance (B1) prior to determination of chroma (S5) to give a measure of saturation independent of brightness

2012-12-18 -------------------------------------------------------------------
* RM - Updated sensitivity curves
* RM - added scale parameter to vismodel (can now implement photon catch noise)
* RM - changed how vismodel handles von Kries correction - now an option, to allow receptor noise model
* RM - passed changes to vismodel to how coldist handles them. Now ready for receptor noise model
* RM - coldist now accepts receptor noise
* PPB - summary.rspec does not take any arguments and returns NAs for positive bmaxnegs and others

2012-12-17 -------------------------------------------------------------------
* PPB - sensmodel changed to allow user-defined ocular media transmission

2012-12-14 -------------------------------------------------------------------
* RM - fixed tcs (allows for "v" names in the cone classes)
* RM - changed voloverlap: allows user to define colors, and if new plot should be called

2012-12-10 -------------------------------------------------------------------
* CME - fixed aggspec.R (names of output dataset weren't matching input 'by' vector)

2012-12-07 -------------------------------------------------------------------
* CME - changed as.rspec to work if user provides a 'whichwl' argument
* CME - changed procspec to work with single reflectance spectrum
* CME - added 'interp' argument to as.rspec and updated automatic search for wavelength column