Zombies, Not again

Added:
-Footsteps
-Copper equipments
-Amethyst equipments
-Simple decorations
-Simple backups
-Voice chat system [(attract zombies when you talk) can be turned off]
-Better nether fortress
-Better End island
-Equipment compare
-Pets
-New light sources
-Smooth boot
-Stackable potions
-Tips on loading screens
-Better mineshafts
-Bridges and extra buildings in the word
-Dungeons

Changes:
-Now spawn: Blaze, Wither skeleton, Magma cube, Pigmans
-In unloaded chunks, furnance and the animal growing is still working
-You can now swing through grass