Promotion of Bool and Zero/One leads to stackoverflow.

[lkdvos]

MWE

using VectorInterface: One, Zero
promote(true, One()) # stackoverflow
promote(true, Zero()) # stackoverflow

This is because both Bool and One/Zero define promotion rules that return the other number type:

promote_rule(Bool, One) # One
promote_rule(One, Bool) # Bool

I'll fix this in a bit.