Added the option to specify dew point temperature, ceiling height, total sky cover, opaque sky cover, horizontal infrared radiation as paramter, input or coming from weather file.
Updated the releases note with the changes in DataReaderTMY3.
changed unit test script to use new python class.
Merge branch 'tmy3Reader'
Corrected documentation
Removed old annotation Coordsy
Updated icon.
Updated icon.
Updated icon.
Updated icon
Updated icon
Updated icon
Updated icon
Updated icon
Added link to Michael Tiller's online book.
Added missing citation
Verified that Rgg is positive.