Java Edition 13w42a

13w42a is the twelfth snapshot for 1.7.2.

This version was removed from the launcher for quite a bit, then it was added back in September 2018.

Additions

 * Witches now spawn anywhere where the light level is 7 or less, including any biome and underground.
 * Different letters can now be typed on signs

Changes

 * Stained glass and stained glass panes have a smoother/transparent texture
 * Rewrote the sound system
 * You are now able to add new sounds using resource packs
 * Resource packs can now add, remove, supplement, randomize, and group sounds using JSON
 * Sounds and music are now stored together in the new .minecraft/assets/sounds folder
 * Improved maps
 * Maps now display the color of colored wool and stained clay, allowing a wider range of colors visible on maps
 * Each different type of block has a different shading on the map
 * Transparency adjusted slightly
 * If water is directly adjacent to ice, when looking through the ice you cannot see the water. However, you can see the ice when looking through water.
 * If water is not directly adjacent to ice, you can see the water when looking through the ice.
 * You can no longer see the water surface from underwater
 * Inventory of the player
 * The armor boxes get black when empty and away from cursor.
 * Putting cursor over the armor inventory displays which armor is to put on there.