get_psm3: add optional url parameter and update default hourly url to new 3.2.2 endpoint (#1736)

* update default endpoint to 3.2.2; add url parameter

* whatsnew

* test

* Revert "test"

This reverts commit 31dcd5d.

* update 30-minute test file to 3.2.2 data

* stickler

@AdamRJensen

* more data file updates

Author: kandersolar

docs/sphinx/source/whatsnew/v0.9.6.rst

@@ -13,6 +13,10 @@ Enhancements
 ~~~~~~~~~~~~
 * Update the URL used in the :py:func:`pvlib.iotools.get_cams` function. The new URL supports load-balancing
   and redirects to the fastest server. (:issue:`1688`, :pull:`1740`)
+* :py:func:`pvlib.iotools.get_psm3` now has a ``url`` parameter to give the user
+  the option of controlling what NSRDB endpoint is used. (:pull:`1736`)
+* :py:func:`pvlib.iotools.get_psm3` now uses the new NSRDB 3.2.2 endpoint for
+  hourly and half-hourly single-year datasets. (:issue:`1591`, :pull:`1736`)
 
 
 Bug fixes
@@ -45,4 +49,5 @@ Contributors
 * Siddharth Kaul (:ghuser:`k10blogger`)
 * Kshitiz Gupta (:ghuser:`kshitiz305`)
 * Stefan de Lange (:ghuser:`langestefan`)
+* Kevin Anderson (:ghuser:`kandersolar`)