Optimization and bugfixes

The 2.0.0 release had many minor glitches and I think these were all addressed

v2.0.0

What's Changed

• Six years later by @rserling in #1
• Refresh by @rserling in #2
• Refresh is complete by @rserling in #3

New Contributors

• @rserling made their first contribution in #1

Full Changelog: https://github.com/rserling/npr2mp3/commits/v2.0.0