Check class validity in Session.AddFilter() #19
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Hello there! I was using go-gpsd and it was quite useful, but I spent half an hour inspecting my codebase for a bug because I was getting SKY reports but no TPV reports. Turns out I mispelled TPV and my code wasn't working as expected. I think that checking the validity of class in Session.AddFilter() would be a great addition. It would also be backwards compatible, because old users just ignore the returned error, while new users can check for it. Thank you for your time, I hope my contribution will be welcome.