In Penknife, worked on the conditional macro. Made it `if` rather than `if-struct` for orthogonality. We can build `if-struct` out of `if` and a non-conditional destructurer, but if we build a non-conditional destructurer out of `if-struct` it'll have different value duplication behavior.
In Penknife, worked on the conditional macro. Made it `if` rather than `if-struct` for orthogonality. We can build `if-struct` out of `if` and a non-conditional destructurer, but if we build a non-conditional destructurer out of `if-struct` it'll have different value duplication behavior.

rocketnia/era-cene,rocketnia/era,rocketnia/era-cene,rocketnia/era,era-platform/cene,era-platform/cene,rocketnia/era,era-platform/cene,rocketnia/era-cene