Sonar Qube Issues

[thomcz]

Add this issue to you commit if you fix an issue from the list from sonar qube.

!Don't close this issue!

The ist of issues can be found here: https://sonarqube.com/component_issues/index?id=hrv-band#resolved=false

[Fenox]

• Override hashcode in HRVParameters
• Renamed packages
• replaced system.exit(0) with finish()
• many more minor things