Hopo Better Mineshaft

--- 3 more mineshafts and 1.20 Update ---

♦ 1.20 support ♦ Added bamboo mineshaft ♦ Added cherry mineshaft ♦ Added mud mineshaft ♦ Added 'Who built this' advancement (when you find one random mineshaft) ♦ Added 'Mineshafter' (when you find all the 12 types of mineshafts) good luck on this one, you will be rewarded with lots of xp :D ♦ Some mineshaft mobs now use armor trims in them (will add more variations in the future) ♦ Updated some mineshaft pieces in the pool, this is still in development but I decided to give you guys a sneak peak;) ♦ Mineshafts now will spawn deeper, at deepslate levels ♦ Mineshafts will generate a little weird (again) this change is really minimal but it will gain more performance on servers