Support for reverse mapping for tiny

[0x000006]

Support for reverse mapping for tiny

Or from any to any other like named -> intermediary or intermediary -> official or official -> named

[Col-E]

The issue is that the format isn't just those three columns. The format is flexible. Its just minecraft modding that uses the three column format. You could hypothetically have 20 columns and it would be valid. Some tiny files only have two columns. Architecting this directionality (which none of the other formats support) in the mappings without having edge-case handling for just this one format (which is yucky and I will avoid doing) is rough.