Merge pull request #2 from LightingResearchCenter/develop

Develop
Fixed absolutetime
Fixed absolutetime
Started importD12
Merge remote-tracking branch 'origin/input' into classes
Fixed Global Attribute duplication
Merge remote-tracking branch 'origin/input' into classes
Moved Daysimeter 12 specific files to subfolder
Created folder for lightmetrics class

And supporting functions
Renamed daysimeter12 files
Renaming and reorganizing
Completed chrom2cct
Added comments to chrom2cct
Merge pull request #3 from LightingResearchCenter/classes

Classes