F# 3.0's NullableOperators conflict with Unquote's short-hand test operators,
e.g. =?, <>?, ... see
http://msdn.microsoft.com/en-us/library/hh323953(v=VS.110).aspx
This is a pretty big breaking change but will need to be done. We will
increment to Unquote version 3.0 at that time. Likely building special .NET 4.5
targets as well (even though binding redirects can fix versioning issues (see
Issue 78), simply providing a .NET 4.5 build will prevent any confusion.
Note that the order in which you open Unquote's assertion operators vs. F#
3.0's NullableOperators can let you choose which should shadow the other.