Add an option for ignoring wrong checksum

[roseshahar]

I want to add an option for not raising an exception when your try to parse with wrong checksum

[coveralls]

Coverage remained the same at 98.057% when pulling bd68950 on shaharrose:feature/parse-ignore-wrong-checksum into c4fc66c on Knio:master.

[xOneca]

Why not use the already existing check parameter (still fixing the logic)?

[roseshahar]

Why not use the already existing check parameter (still fixing the logic)?

@xOneca Because the check requires the NMEA sentence to have checksum in it, and I feel that allowing wrong checksum needs a parameter of its own

[xOneca]

Allowing wrong checksum is not checking it, isn't it?

I mean, it seems to me that the original check parameter should be doing what you want to do with the new parameter, but it isn't doing it. I would make check raise an exception only if there's no checksum or the check is wrong.

[roseshahar]

@xOneca I think that the check argument is really weird as well, but I think that @Knio should agree to the change of the check purpose

[xOneca]

Sure.

[fohrloop]

I think this is fixed in a pull request I just made: #115

[xOneca]

It feels to me more correct the fix in 91204af from @np-8.