This PR moves away from using `List.get` / `List.get?` / `List.get!` and `Array.get!`, in favour of using the `GetElem` mediated getters. In particular it deprecates `List.get?`, `List.get!` and `Array.get?`. Also adds `Array.back`, taking a proof, matching `List.getLast`. |
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| .. | ||
| BVDecide | ||
| BVDecide.lean | ||