strange ... uncommited changes
package file missing

the nuget - package file was missing in FsCheck.Documentation - I
reinstalled FSharp.Formatting to make sure everything is fine
BUGFIX  - Fluent.Any can create Generator without previous run

I had this problem with C#: For Spec.Any I want to greate an Generator
inline with Any.ofType<int> and .Where but this will fail because the
default instances of Arbitrary are not memoized yet (Runner.init never
forced) - so I added forces of that value to the Any - methods