* Refactoring and addition of logzero (#172)
* Refactored convert.py and added logging.
* Added logging and refactored.
* Added logzero to requirements.txt
* Added logging to metadata.py
* Created a log in misc.py. Updated slugify import.
* Some general improvement
* Improve message layout
* Improve test mechanism
* Implement debug level logging
* Fix some minor mistakes
* Make pytest happy
* Remove unimplemented --verbose option
* Update ISSUE_TEMPLATE.md
* Rename LICENSE
* Remove obvious from log.debug()
* Show track URL when writing to file (debug)