add v2 types

lint: allow large enum variant

temp

.rustfmt.toml

@@ -1,4 +1,4 @@
 newline_style="Unix"
 reorder_imports=true
 # only supported in nightly
-imports_granularity="Module"
+imports_granularity="Module"

sia/src/signing.rs

@@ -167,6 +167,12 @@ impl AsRef<[u8; 64]> for Signature {
     }
 }
 
+impl From<[u8; 64]> for Signature {
+    fn from(buf: [u8; 64]) -> Self {
+        Signature(buf)
+    }
+}
+
 impl fmt::Display for Signature {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "{}", hex::encode(self.0))