Update change log

Documented the new version.

ChangeLog

@@ -1,3 +1,8 @@
+Version 2.0.1 (January 13, 2021):
+- Generated passwords are now properly removed from memory once they
+  are displayed to the user.  Previously, this did not work, and would
+  occasionally create a spurious error message.
+
 Version 2.0.0 (December 12, 2020):
 - Initial public release to GitHub and PowerShell Gallery.
 - Made SecureString output the default, with the -AsPlainText parameter
@@ -7,4 +12,4 @@ Version 2.0.0 (December 12, 2020):
 Versions 1.0.0 (2016) through 1.2.1 (whenever):
 - These versions were a single script that this author used his own use,
   and probably shared it with a few friends and colleagues. They weren't
-  released publicly.
+  released publicly.