I have a small template cache thing that holds strings (we'll get to that in a bit) and allows re-rendering them with new data.
On the first version, I figured the template strings could be hardcoded and so it's just &'static (and then slices from there).
However, now I want to be able to optionally load the templates at runtime, so I have a
String in addition to a
Do I want to use Cow for this? From reading up on it a bit - seems that the docs urge its use for return types... but is that just the usual, or am I thinking about this all wrong?