Bedrock Edition beta 1.2.13.11

Beta 1.2.13.11 is the third beta version released for 1.4 that mainly fixed bugs.

Additions

 * Added two options to swap A/B buttons and X/Y buttons on controllers, which can be found in Controller Settings

Fixes

 * Fixed the cause of several crashes! Keep playing the game normally and if your game crashes, we will automatically collect a crash report
 * When Experimental Gameplay is enabled, Tridents can now be enchanted
 * Mobs will once again not spawn on transparent blocks like Glass and Fences
 * Top Snow falling on a Top Snow Block no longer loses one layer
 * Ladders can once again be placed in the same block occupied by a player