dev: Work on supporting more complex dictionaries like Hungarian.

[Jason3S]

This first PR is mostly a bit of refactoring. No real external changes are available.

Gist:

• Performance: Reduce the amount of overhead generating the words.
• Internally, use an array of rule indexes instead of a string that needs to be constantly manipulated to determine which rules to apply.
• Looking into exporting a suffix tree instead of a list of words. The idea is to make it easier to convert the dictionary into a Trie.