Incorrectly use `raises` annotations

[beef331]

Presently procedures are annotated raises: [SomeDefect] this causes warnings cause raise is only meant for CatchableErrors there is no Defect tracking.

[termermc]

I'm surprised that there's no Defect tracking. I'll figure this out a bit later, wish I saw this before making the last release.

[beef331]

You could tag your procs with your own Defective then on any consuming modules push forbids: [Defective], but yea that aside there is nothing.

https://nim-lang.org/docs/manual.html#effect-system-tag-tracking