johnmyleswhite/NullableTypes.jl — pull request #2 by johnmyleswhite (2014-08-12 16:01:20+00:00)
Title: Make isequal, == and hash respect isnull attribute

@StefanKarpinski: I added these to make sure that `isequal`, `==` and `hash` never attempt to access an uninitialized value.