Remove some unnecessary dynamic vectors/strings

[Dave-Lowndes]

Eliminate dynamic vector & string storage where there's a simpler alternative.

Code tweak in prepareForEvaluation to use logical OR rather than bitwise and const the initial bool variable.

[baconpaul]

So this change is in the first half correct but I'm not sure I like it. Naming that white list and table set makes the code quite a bit clearer i thought.

The second change to a constexpr initializer list is, I think, a c++ 20 thing. At least it doesn't compile in ci with clang for mac.

[mkruselj]

That whitelist should've been behind a // clang-format off (even if it's a valid clang-format that we use), for further clarity I think. It would signify we really want it to be formatted that way.

[Dave-Lowndes]

How's this one looking now?

[baconpaul]

Great!