ff 0.13 (#269)

* Partial move to ff 0.13

It turns out the newly released k256 0.12 isn't on ff 0.13, preventing further
work at this time.

* Update all crates to work on ff 0.13

The provided curves still need to be expanded to fit the new API.

* Finish adding dalek-ff-group ff 0.13 constants

* Correct FieldElement::product definition

Also stops exporting macros.

* Test most new parts of ff 0.13

* Additionally test ff-group-tests with BLS12-381 and the pasta curves

We only tested curves from RustCrypto. Now we test a curve offered by zk-crypto,
the group behind ff/group, and the pasta curves, which is by Zcash (though
Zcash developers are also behind zk-crypto).

* Finish Ed448

Fully specifies all constants, passes all tests in ff-group-tests, and finishes moving to ff-0.13.

* Add RustCrypto/elliptic-curves to allowed git repos

Needed due to k256/p256 incorrectly defining product.

* Finish writing ff 0.13 tests

* Add additional comments to dalek

* Further comments

* Update ethereum-serai to ff 0.13

processor/src/coins/monero.rs

@@ -188,7 +188,7 @@ impl Monero {
 
   #[cfg(test)]
   fn test_view_pair() -> ViewPair {
-    ViewPair::new(*EdwardsPoint::generator(), Zeroizing::new(Scalar::one().0))
+    ViewPair::new(*EdwardsPoint::generator(), Zeroizing::new(Scalar::ONE.0))
   }
 
   #[cfg(test)]
@@ -398,7 +398,7 @@ impl Coin for Monero {
       } else if outputs == 1 {
         plan.payments.push(Payment {
           address: Address::new(
-            ViewPair::new(EdwardsPoint::generator().0, Zeroizing::new(Scalar::one().0))
+            ViewPair::new(EdwardsPoint::generator().0, Zeroizing::new(Scalar::ONE.0))
               .address(Network::Mainnet, AddressSpec::Standard),
           )
           .unwrap(),
@@ -584,7 +584,7 @@ impl Coin for Monero {
       self.rpc.get_fee().await.unwrap(),
     )
     .unwrap()
-    .sign(&mut OsRng, &self.rpc, &Zeroizing::new(Scalar::one().0))
+    .sign(&mut OsRng, &self.rpc, &Zeroizing::new(Scalar::ONE.0))
     .await
     .unwrap();