Minor performance optimizations

[JustinTArthur]

This makes a lot of small tweaks to improve performance throughout the library.

• Reduces function calls and stack depth
  • str.format() invocations replaced with f-strings.
  • Redundant number type conversions removed.
  • partials passed to FrameEval replaced with closure equivalents where easy, sometimes requiring var name changes in outer func
  • Use dict literals instead of constructor.
• Reduce obj attr lookups in detector FrameEvals by passing the set-adder instead of the set to the detection code.
• Use tuples instead of lists for constants and defaults, also accept tuples in more places where it's the more appropriate data type.

I'm starting this as a draft PR so you can decide if you hate the changes or not while I take some time to type-check and test them. No need to worry about conflicting with this PR as I will rebase it with master as time permits.

[JustinTArthur]

This is just a big annoying PR at this point. I may introduce more acute changes from this set as time permits.