Jpylyzer 2.1 release candidate 1

What's Changed

• FIX - Windows Docker file permissions by @carlwilson in #160
• FEAT - Jpylyzer app in docker container by @carlwilson in #161
• Pin pyinstaller at 3.6, as that's the last version that supports Python 2.7 by @VirtualTim in #172

New Contributors

• @VirtualTim made their first contribution in #172

Full Changelog: 2.0.0...2.1.0rc1