Added fixity declaration to (..) (range operator)

[pseudonom]

I'm not certain exactly what the fixity declaration should be, but it seems that (..) should have one.

[paf31]

How does this work with things like >>= and <$>? Those are my only real use cases where precedence seems important:

show <$> 1 .. 5
1 .. 5 >>= \n -> [n, n * 2]

should parse as

show <$> (1 .. 5)
(1 .. 5) >>= \n -> [n, n * 2]

I think it does, but could you please check

[pseudonom]

Sure. I checked and adding the fixity declaration in the patch makes both of those work.

[paf31]

I tested core-tests and test-everything too, everything looks good. Thanks!