Merge branch 'master' of https://github.com/jiaaro/pydub

increment version

Merge pull request jiaaro#205 from jiaaro/fix-193

fix jiaaro#193

Merge branch 'master' of https://github.com/jiaaro/pydub

increment version for release

Increment version for v0.17.0

- Add the ability to add a cover image to MP3 exports via the `cover` keyword argument to `pydub.AudioSegment().export()`
- Add `pydub.AudioSegment().get_dc_offset()` and `pydub.AudioSegment().remove_dc_offset()` which allow detection and removal of DC offset in audio files.
- Minor fixes for windows users

release v0.16.7

Add scipy-powered filters and bump version