Update SAM libraries (#444)

* Update SAM libraries

* Add new SAM libraries

* Update pvsystem.py

* Update pvsystem.py

* remove bad inverter line

* update example module output

* Adding LinkeTurbidities.h5

* remove old SAM libraries

* adding note to whatsnew for update to SAM libraries

* Update v0.5.2.rst

* Update v0.5.2.rst

Author: cwhanse

docs/sphinx/source/whatsnew/v0.5.2.rst

@@ -1,4 +1,4 @@
-.. _whatsnew_0520:
+0.. _whatsnew_0520:
 
 v0.5.2 (__, 2017)
 -------------------------
@@ -12,8 +12,10 @@ API Changes
 
 Enhancements
 ~~~~~~~~~~~~
-* Improve clearsky.lookup_linke_turbidity speed, changing .mat source
-  file to .h5 (:issue:`437`)
+* Updated libraries for CEC module parameters to SAM release 2017.9.5 
+(library dated 2017.6.30) and CEC inverter parameters to file posted to 
+www.github.com/NREL/SAM on 2018.3.18, with one entry removed due to a 
+missing parameter value. (:issue:'440')
 
 Bug fixes
 ~~~~~~~~~