DM Unoffcial Fix

Diggus Maximus provides vein mining feature, but in versions higher than 1.18.2, there're two major bugs, and this fork simply fixed them. 
Made for FMN modpack. 

Bugs solved: 

1. "Stop on tool break" causes player with bare hand to break only two blocks. 
2. When setting "maxMinedBlocks" lower than 14, "mineDiag" would cause the autopick to miss a block. 
3. Vein mined single block won't be auto picked up. 

Why not creating a pull request? 
Because the original author isn't seemed likely to merge it in two months, as Issue #73 that created on Aug 11 still got no response.