Update to 4.5

[ShalokShalom]

Currently, the REPL shows 4.0 is in use.

[ScottHutchinson]

@ShalokShalom Currently, the code below works (creates an anonymous record type). So I think that means it uses F# 4.6. I opened a new issue requesting that the version be displayed in the About section.

    let customer = {| FirstName = "Fred"; LastName = "Wilson" |}
    printfn "This customer is %s %s" customer.FirstName customer.LastName