Update CHANGELOG.md

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### New Features
+* Block module loading after iocInit has been invoked.
 * Arguments have been added to `iocsh.bash` to enable user to pass any debugger options to GDB and Valgrind.
 * Autocompletion for `iocsh.bash` has been added
 * Removed `iocsh_gdb.bash` and `iocsh_nice.bash`, both of whose functionality can be called via `iocsh.bash -dg` and `iocsh.bash -n`, respectively.