BIP449: OP_TWEAKADD (#1944)

* BIP: OP_TWEAKADD

* BIP TweakAdd: note on commutativity of tweaking and add test cases

* BIP TweakAdd: Invert Argument Order

* BIP Tweakadd: fix typo & add note on even-y tweaking

* BIP TweakAdd -- add mailing list discussion

* BIP TweakAdd: Add Alpen and MATT mentions

* BIP TweakAdd Formatting Edits

* BIP TWEAKADD remove conventions section

* BIP TWEAKADD formatting fix

* BIP TWEAKADD Move Vectors to end

* BIP TweakAdd: Condense compatibility section

* [BIP-0449] Updates post assignemnt

* [BIP-0449] Normalize Metadata

* Update bip-0449.md Link Text to point to OP of ML Thread

bip-0449/test-vectors/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "test-vectors"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+secp256k1 = "0.29"
+hex = "0.4"
+bitcoin_hashes = "0.16.0"