add linke turbidity formulas module to atmosphere#278

Merged

wholmgren merged 22 commits intopvlib:masterfrom

mikofski:linke_turb_forms

Feb 6, 2017

Commits on Dec 3, 2016

add linke turbidity formulas module
mikofski
committed

Commits on Jan 23, 2017

Commits on Jan 24, 2017

Commits on Jan 25, 2017

test kaste96_lt against linke turbidity using tmy3 at 700nm
mikofski
committed

Commits on Jan 30, 2017

removing filters from kasten pyrhelometric formula
mikofski
committed

Commits on Feb 2, 2017

Commits on Feb 3, 2017

use broadband AOD arg instead of methods
mikofski
committed

Commits on Feb 6, 2017