fix logger template strs

[FoamyGuy]

This changes the template strings going into logger.info() and other level functions to use %s instead of {} this resolves the issue noted in #36

If I've missed something obvious that I just need to update to get this working then sorry for the confusion, let me know and we can close this.

[FoamyGuy]

I see pylint is upset with all of those changes so I suspect something within my environment is wonky I will close this and try to get it straightened out locally.

[rosterloh]

I've had the same issue as this for a while and your PR fixes it for me.

[FoamyGuy]

Thank you for reporting that @rosterloh. I try to look into it further this week. I had convinced myself it was likely an issue specific to my environment, so knowing it's affecting others is very helpful. I'll post here with whatever information I find if it's just something that needs to be updated. Or if we come to the conclusion this is a widespread issue we can re-open this PR and get some discussion about what to do about the pylint errors that CI found.