--------------------
- `88`_: Tentative fix: make bandmat optional requirement as it is causing installation errors on python 3.7. See [here](https://github.com/MattShannon/bandmat/issues/10) for details.
- `85`_: Fixed rounding error in caluculating number of frames.
- `87`_: Fixed :func:`nnmnkwii.preprocessing.trim_zeros_frames` issue. Support passing ``trim`` argument.