started trie method
added precomputed mode

Uses pickling, which sucks. The output files are HUGE and it's SLOW.

Try something that doesn't need to be read into memory to do lookups
(SQLite?).
converted to use SQLite

Data base is way larger (1.5GB!), but lookups are fast (~7 seconds)
Merge https://github.com/borgel/licenseplate-game