Updated change log

Author: kmvanbrunt

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.9.18 (TBD, 2019)
+* Bug Fixes
+    * Fixed bug introduced in 0.9.17 where help functions for hidden and disabled commands were not being filtered
+     out as help topics
+
 ## 0.9.17 (September 23, 2019)
 * Bug Fixes
     * Fixed a bug when using WSL when all Windows paths have been removed from $PATH