photobiology 0.8.5 (new functionality and bug fixes)

Implement extract and replacement “indexing” methods for collections of spectra.
(Please, let me know if you encounter any errors with these methods, as some testthat tests give infinite recursion errors that I cannot reproduce outside testthat.)

Implement combine method c() for collections of spectra.

Add function convolve_each().

Add helper function shared_member_class().

photobiologySun 0.3.5 (bug fix)

Rebuild with photobiology 0.8.5.

photobiologyLEDs 0.3.2 (bug fix)

Trim Norlux data to 250..900 nm, and add source_mspct object for this multi-channel array.

Rebuild data and the package with photobiology 0.8.5.

photobiologyPlants 0.3.2 (bug fix)

Set spectral absorbance data type for photoreceptors as "internal".

Fix minor error in UVR8 data.

Rebuild all data and the package under photobiology 0.8.5.

BACKWARDS COMPATIBILITY: Internal changes to attributes in objects of  generic_mspct and derived classes are not 100% backwards compatible, but should be of little consequences to most users. No changes to user code are needed, but objects containing collections of spectra created with versions 0.8.0 to 0.8.4 may need to be rebuilt.

NOTE: Sources, and Windows binaries only for R 3.2.x, are now available in the repository.

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