Add NEWS entries for the ImportWarning change and documentation update
diff --git a/Misc/NEWS b/Misc/NEWS
index df38071..5e4004e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -25,6 +25,8 @@
 Library
 -------
 
+- warnings.py now ignores ImportWarning by default
+
 - Patch #1517790: It is now possible to use custom objects in the ctypes
   foreign function argtypes sequence as long as they provide a from_param
   method, no longer is it required that the object is a ctypes type.
@@ -115,6 +117,9 @@
 Documentation
 -------------
 
+- Cover ImportWarning, PendingDeprecationWarning and simplefilter() in the
+  documentation for the warnings module.
+
 - Patch #1509163: MS Toolkit Compiler no longer available.