Pass guideline parameters in a dict

[MarkNahabedian]

This change simplifies the passing of paramneters from the various Guidelines from run down to the various Guideline.checkfunctions.

Such parameters no longer need to be explicitly declared and passed through in various functions like pull_request_build.

The current passing of parameters for existing guidelines has not yet been changed. I could do that work in separate PRs if the package commiters encourage it.

This change was tested in the guideline_linecounts_meet_thresholds branch of my fork, which introduces a new guideline. The unit tests ran to completion. The unit test for the new guideline succeeded.