Add entry to change log for #126

Author: mpilgrem

Changelog

@@ -1,3 +1,10 @@
+Changed in version UNRELEASED:
+
+   * On Windows, when terminal-style and printing output, no longer skips
+     `"\ESC...\STX"` sequences. (If used with legacy ConHost directly (for
+     example, `conhost.exe cmd.exe`), it will require ConHost's ANSI-capability
+     to be enabled separately.) (#126)
+
 Changed in version 0.8.4.0:
 
    * Added `System.Console.Haskeline.ReaderT` module for `ReaderT` interface.