Version 1 Features: an Emerald sword, a very good pickaxe, a mob, 2 gems, and a dimension.
Version 2 Features: Made the mob have 200 hp, renamed the mob, added 6 new biomes, a red bow, red arrows, and the ultimate gem now does stuff when you hit mobs with it.
Version 3 Features: renamed the mob again, made it's spawn egg's colors resemble the mob more, made stuff craftable, added green apples, and made the pickaxe have more durability. (I forgot to make the green apples name be colored also if you're wondering how to make your items color coded do §+a-e or §0-9).
Version 4 Features: Added a new mob, added a new food, a new block, a new biome, and you can use green apples to craft golden apples.
Version 5 Features: Made the white gem do stuff, added 6 new items used to craft the ultimate gem (plus the white gem), added a diamond biome (used in diamond dimension), added red gravel, red flint, a red stick, changed red bow and red arrow crafting recipes, made it so the food added in version 4 has a crafting recipe and when eating gives you a bowl, added a new mob, and replaced all the drops of mobs added in this mod with the things used to craft the ultimate gem (one as a normal drop and one as a rare drop, excludes the white gem), added a recipe for the white gem, and added an item you can only get via /give or a mod that can give you free items
ou hit a mob with it.