Ffmpeg-normalize

* Bump version.

* Remove dead code.

* Fix for python2 division.

* Update documentation.

* Progress bar.

* Remove imports from test file.

* Fix travis file.

* WIP: progress bar.

* Minor typo in option group.

* Add simple unit test for disabling chapters.

* Fix unit test.

* Bump version.

* Add option to disable chapters, fixes 65, also fix issue with metadata.

* Bump version.

* Set default loudness target to -23, fixes 48.

* Bump version.

* Merge pull request 64 from UbiCastTeam/encoding-issue.

Stdout and stderror decoding ignoring utf8 encoding errors

* Stdout and stderror decoding ignoring utf8 encoding errors.

* Bump version.

* Add errors for impossible format combinations, fixes 60.

* Fix ordering of output maps, fixes 63.

* Improve documentation.

* Add option to print first pass statistics.