no suitable resolution for prefix unary operator '+' on type 'int'

[yuanyelele]

<<< +1 >>>;

[lathertonj]

I'm not certain, but since prefix unary + is a nop, this might be an instance where this is allowed through the syntax parser so we can give an error that's more specific than "syntax error", but then it wasn't allowed in the emitter because if a novice programmer typed a unary +, they probably meant to type something else.

@spencersalazar might know better whether it was intentional to leave unary + unimplemented in the emitter.