Re-export types to reduce breaking changes downstream

Author: sanket1729

src/lib.rs

@@ -168,6 +168,25 @@ pub use context::global::SECP256K1;
 #[cfg(feature = "bitcoin_hashes")]
 use hashes::Hash;
 
+// Backwards compatible changes
+/// Schnorr Sig related methods
+#[deprecated(since = "0.21.0", note = "Use schnorr instead.")]
+pub mod schnorrsig {
+    #[deprecated(since = "0.21.0", note = "Use crate::XOnlyPublicKey instead.")]
+    /// backwards compatible re-export of xonly key
+    pub type PublicKey = super::XOnlyPublicKey;
+    /// backwards compatible re-export of keypair
+    #[deprecated(since = "0.21.0", note = "Use crate::KeyPair instead.")]
+    pub type KeyPair = super::KeyPair;
+    /// backwards compatible re-export of schnorr signatures
+    #[deprecated(since = "0.21.0", note = "Use schnorr::Signature instead.")]
+    pub type Signature = super::schnorr::Signature;
+}
+
+#[deprecated(since = "0.21.0", note = "Use ecdsa::Signature instead.")]
+/// backwards compatible re-export of ecdsa signatures
+pub type Signature = ecdsa::Signature;
+
 /// Trait describing something that promises to be a 32-byte random number; in particular,
 /// it has negligible probability of being zero or overflowing the group order. Such objects
 /// may be converted to `Message`s without any error paths.