Merge #429: Misc doc fixes

676a980 Remove unnecessary panic message (sanket1729)
aa50cc6 Remove Schnorr word from keypairs (sanket1729)

Pull request description:

  Keypairs are pair of EC points that don't have anything to do with the
  signature algorithm

ACKs for top commit:
  apoelstra:
    ACK 676a980
  tcharding:
    ACK 676a980

Tree-SHA512: ed3e6f5e821d18641234b308b130271dcd2ec0dd6519a0e9d91564ab8e902b82180d7df377f2bcf08cd3ca1df7ce775422e4a3c386637eaff348e58b033de3ea

Author: apoelstra

src/key.rs

@@ -696,13 +696,7 @@ impl KeyPair {
         &mut self.0
     }
 
-    /// Creates a Schnorr [`KeyPair`] directly from generic Secp256k1 secret key.
-    ///
-    /// # Panics
-    ///
-    /// Panics if internal representation of the provided [`SecretKey`] does not hold correct secret
-    /// key value obtained from Secp256k1 library previously, specifically when secret key value is
-    /// out-of-range (0 or in excess of the group order).
+    /// Creates a [`KeyPair`] directly from a Secp256k1 secret key.
     #[inline]
     pub fn from_secret_key<C: Signing>(
         secp: &Secp256k1<C>,
@@ -718,7 +712,7 @@ impl KeyPair {
         }
     }
 
-    /// Creates a Schnorr [`KeyPair`] directly from a secret key slice.
+    /// Creates a [`KeyPair`] directly from a secret key slice.
     ///
     /// # Errors
     ///
@@ -743,7 +737,7 @@ impl KeyPair {
         }
     }
 
-    /// Creates a Schnorr [`KeyPair`] directly from a secret key string.
+    /// Creates a [`KeyPair`] directly from a secret key string.
     ///
     /// # Errors
     ///
@@ -759,7 +753,7 @@ impl KeyPair {
         }
     }
 
-    /// Creates a Schnorr [`KeyPair`] directly from a secret key string and the global [`SECP256K1`] context.
+    /// Creates a [`KeyPair`] directly from a secret key string and the global [`SECP256K1`] context.
     ///
     /// # Errors
     ///