Description

After csharp-style indexing has been introduced in F#6.0, it might be interesting to have a rule that can be configured with style=ocaml (in case one prefers to stay with the legacy syntax) or style=csharp.

OCaml style:

let someArray = [| "foo" ; "bar" |]
let bar = someArray.[1]
System.Console.WriteLine bar

CSharp style:

let someArray = [| "foo" ; "bar" |]
let bar = someArray[1]
System.Console.WriteLine bar

This might require upgrading our FCS dependency.