Tell coveragepy to ignore type checking code and `...`
Tell coveragepy to ignore type checking code and `...`

This is so we can get a more accurate picture of coverage.

For more info see:
- https://github.com/nedbat/coveragepy/issues/831

RDFLib/rdflib,RDFLib/rdflib,RDFLib/rdflib,RDFLib/rdflib