Java Edition Beta 1.3

Beta 1.3 added redstone repeaters, beds, three types of slabs, a new splash screen as well as other changes and fixes.

Additions

 * Redstone repeaters
 * Three new half-size blocks (wooden slab, cobblestone slab, sandstone slab)
 * Wooden slab has the properties of stone slab.
 * New Mojang logo splash screen
 * Added whitelisting to the server. To use, enter whitelist  where cmd is on, off, add , remove , list or reload
 * Graphics settings screen

Changes

 * Breaking a block made of two slabs now drops 2 slabs.
 * Slimes have a higher spawn rate
 * Ability to toggle between classic lighting and "smooth" lighting
 * Worlds now use a generic McRegion chunk save format, with built-in auto conversion
 * Beds can now be obtained without inventory editors
 * While starting a new world, players can choose the world's name and seed to generate the world from.
 * More than 5 Worlds possible
 * Scrollbars added in both the texture pack list, and in the map selection screen
 * and are now toggled when pressed.
 * When is toggled on, mobs display their unique entity ID numbers over their heads.
 * toggles mouse smoothing
 * In 3rd person mode, character can be visibly seen to bob side to side when you walk (only when View Bobbing is enabled).
 * Sandstone is now found at the bottom of naturally generated sand.
 * All pressure plates now require two of its materials, instead of 3. Stone slabs are now created by using 3 of the materials
 * Mine time for sandstone decreased.
 * Redstone dust will get darker the farther away it is from a source of power.
 * Fewer passive Mobs when on harder modes.
 * Deleting world confirmation changed slightly.
 * Sulphur renamed back to Gunpowder

Fixes

 * 11 bugs fixed
 * When breaking double slabs (one slab placed on another) it will drop two slabs instead of one.
 * Wood and logs don't burn forever anymore.
 * Grassland/Sand-related biome border fixed (Boundaries line up, rather than obviously show chunk borders)
 * No longer receiving Java Log error .txt file spam in the minecraft.exe folder when closing the Minecraft client program.
 * Players can no longer use the click-release to quickly mine blocks (referred to as "click mining"). (Multiplayer only)
 * Players no longer glitch when standing on fences in multiplayer.
 * Players can no longer milk squids.
 * When right-clicking on a wooden door while holding a bow or fishing rod, arrows will no longer be fired into the door, nor will the fishing hook be cast into the door.
 * Hostile mobs can now be attacked properly in multiplayer.
 * Lapis lazuli ore now drops 4-8 Lapis Lazuli in multiplayer.
 * Bedrock and other blocks cannot be removed by tilling grass or dirt with a hoe and placing seeds anymore.

Debugging version
There is a debug version of Beta 1.3 that spawns the player with 64 torches, 64 beds, a diamond pickaxe, a diamond shovel, and a diamond axe upon creating a new world. This would most likely be referred to as Beta 1.3a, as the version of Beta 1.3 available in the launcher is Beta 1.3b.