Add Error Monitoring System

[Swap76]

Can use Sentry for that

[Swap76]

Hey, I have made a pull request adding it.

Please have a look :-)

[aawgit]

Hi, Thanks for the contribution. I'm working on some refactoring at the moment. I'll merge this once that is done. And sorry for taking this long to respond.

[Swap76]

Cool @aawgit