Update changelog

Author: mominul

CHANGELOG.md

@@ -5,6 +5,7 @@
 * Be less restrictive when saving users selection. ([#41](https://github.com/OpenBangla/OpenBangla-Keyboard/pull/41)) 
 * Now it is possible write using AltGr and ShiftAltGr layer when using Fixed layout methods. Fixes bug [#40](https://github.com/OpenBangla/OpenBangla-Keyboard/issues/40).
 * Auto update checking is now configurable from settings dialog. There is now also a menu item in the TopBar for instant update checking. ([#32](https://github.com/OpenBangla/OpenBangla-Keyboard/issues/32))
+* Fixed a crash. ([#52](https://github.com/OpenBangla/OpenBangla-Keyboard/issues/52))
 ## 1.4.0
 * Fixes a serious bug [#26](https://github.com/OpenBangla/OpenBangla-Keyboard/issues/26).
 * OpenBangla Keyboard will check for updates automatically and notify the user if an update is available.