Cannot build tests in Debug mode with either F# 4.0 nor F# 4.1

[vasily-kirichenko]

3>D:\github\FsControl\FsControl.Test\UnitTest.fs(122,40): error FS0193: A type parameter is missing a constraint 'when (FsControl.SequenceA or Microsoft.FSharp.Collections.seq< ^a> or ^d) : (static member SequenceA : Microsoft.FSharp.Collections.seq< ^a> * ^d * FsControl.SequenceA -> ^d)'

[gusty]

Thanks @vasily-kirichenko for reporting this.
I know they fail when compiled in Debug mode.
Since they work in Release Mode I think this is related to a bug in the F# compiler.
I just didn't find the time to take a look at this, come up with minimal repro and report it in the F# compiler site as an issue.

[gusty]

Actually this is a duplicate of #41