Release Version 2.1.0

OS support

This is the first release that officially supports macOS (min. version 10.13).
Installers for windows (PMbrowser-2.1.0-win64.msi), macOS (PMbrowser-2.1-Darwin.pkg) and
Linux (x86_64 architecture, DEB-package PMbrowser-2.1.0-Linux.deb) are provided.
For Linux, additionally are bare executable QtPMbrowser is provided.

Installation instructions can be found here.

What's Changed

• Mouse-wheel: scroll instead of zoom by @ChrisHal in #9
• new feature: shift-click&drag to move traces in display area by @ChrisHal in #10
• Improve user access to meta-data records by @ChrisHal in #11
• adding more documentation by @ChrisHal in #12

Full Changelog: v2.0...v2.1.0