Add support for most common mappers

[jakehffn]

Stolen directly from this issue since I can't seem to find the original source

• Mapper 1 | 677 (28%)
• Mapper 4 | 587 (24.28%)
• Mapper 2 | 267 (11.04%)
• Mapper 0 | 247 (10.22%)
• Mapper 3 | 155( 6.41%)
• Mapper 7 | 75 (3.1%)
• Mapper 206 | 44 (1.82%)
• Mapper 11 | 31 (1.28%)
• Mapper 5 | 24 (0.99%)
• Mapper 19 | 20 (0.83%)

[jakehffn]

Mapper 1 added with a6f1dc4

[jakehffn]

Mapper 4 mostly added with 171e010