Dhlab

Fix

- **ngram**: lang param is not supported for avis
- **requirements**: add scipy to reqirements

Feat

- **totals**: Add totals() to top level
- **DhlabObj**: add DhlabObj
- **Corpus**: allow empty Corpus and construct df

Fix

- **conc_coll**: fix __repr__ functions

Refactor

- **corpus**: change add()

Feat

- added image search in bokhylla books to api

Fix

- nbtokenizer now handles numbers combined with words, e.g. '1800-tallet'

Fix

- relative and absolute

Fix

- ngram smooth param