Release-Notes.md

@@ -2,6 +2,12 @@ This page includes notes about the changes in released versions of Glance. Newer
 
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+**version 0.4.2**
+
+Cleaned up usage of keys() and moved to using importlib for loading configuration files, since imp is depreciated. 
+
+------------
+
 **version 0.4.1**
 
 Glance has moved to Python 3.6! We have transitioned from using the old Basemap libraries to using Cartopy and also from PyQt4 to PyQt5.