Improve exception handling

[torbennehmer]

Checklist

• I have filled out the template to the best of my ability.
• This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

pye3dc's exceptions need to be handled in a better way.

Also think about exceptions in the config low, if possible distinguish between RSCP and Auth errors (#28).

Describe the solution you'd like

fix the code, try for some central handling

Describe alternatives you've considered

./.

Additional context

./.

[torbennehmer]

fixed with #107