Remove extra data check in signSchnorr and bump version (#3)

This commit removes the check for 'e' (auxRand equivalent) being valid extra data in the signSchnorr function. This adjustment aligns with the updated handling of undefined 'e' values, as discussed in issue #3. The library version is also incremented to reflect this change.

index.js

@@ -322,9 +322,6 @@ export function signSchnorr(h, d, e) {
   if (!isHash(h)) {
     throw new Error('Expected Scalar');
   }
-  if (!isExtraData(e)) {
-    throw new Error('Expected Extra Data (32 bytes)');
-  }
   return necc.schnorr.signSync(h, d, e);
 }
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@bitcoinerlab/secp256k1",
   "homepage": "https://bitcoinerlab.com/secp256k1",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "A library for performing elliptic curve operations on the secp256k1 curve. It is designed to integrate into the BitcoinJS & BitcoinerLAB ecosystems and uses the audited noble-secp256k1 library. It is compatible with environments that do not support WASM, such as React Native.",
   "main": "dist/index.js",
   "types": "types/index.d.ts",