Make resilient to callbacks throwing exceptions

[ocalvo]

Gammu ReadDevice could (for example) execute a callback if an SMS message has been received, if this callback throws, it will bring the thread down and the worker will not work anymore.

This change address that by protecting the call to ReadDevice and execute the callback with the exception that was raised.

[codecov]

Codecov Report

Merging #40 into master will increase coverage by 0.00%.
The diff coverage is 58.33%.

@@           Coverage Diff           @@
##           master      #40   +/-   ##
=======================================
  Coverage   40.84%   40.85%           
=======================================
  Files          49       49           
  Lines        1944     1951    +7     
  Branches      230      230           
=======================================
+ Hits          794      797    +3     
- Misses       1123     1127    +4     
  Partials       27       27           

Impacted Files	Coverage Δ
gammu/worker.py	85.82% <54.54%> (-2.37%)	⬇️
setup.py	54.54% <100.00%> (ø)

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[nijel]

Merged, thanks for your contribution!

[ocalvo]

Thanks.
Can you release version 3.1?

[ocalvo]

Merged, thanks for your contribution!

@nijel Can you release 3.1?

[nijel]

Yes, I will release it eventually, I'm just too busy to do it right now.

[ocalvo]

Yes, I will release it eventually, I'm just too busy to do it right now.

I made an stupid mistake in this PR, please merge this: #41

[nijel]

The 3.1 release is out: https://pypi.org/project/python-gammu/3.1/ https://wammu.eu/download/python-gammu/3.1/