- need to handle trennbare verbs
- and some more other prefix ones I suspect I don't handle right now
- rank the unregularness for filtering/sorting
- filter by type/hilfsverb/tag
- build index of all conjugations for searching
- record the modifications to each verb to use for highlighting
- output prettily like the old one
- prepare for web version
- rank commonness of base verbs (top100? top50? etc)
- rank occurances of all conjugations (from top10000 as before)
- special mode to highlight only irregularities