Convert all UK spelling to US (#2138)

* all the ise

* forgot a misspelling

* a few more replacements

* bump impl

* rollback and fixes

* bump impl again

* Add aliases for RPC

* Update on_demand.rs

substrate/core/finality-grandpa/primitives/src/lib.rs

@@ -58,8 +58,8 @@ decl_runtime_apis! {
 	/// This should be implemented on the runtime side.
 	///
 	/// This is primarily used for negotiating authority-set changes for the
-	/// gadget. GRANDPA uses a signalling model of changing authority sets:
-	/// changes should be signalled with a delay of N blocks, and then automatically
+	/// gadget. GRANDPA uses a signaling model of changing authority sets:
+	/// changes should be signaled with a delay of N blocks, and then automatically
 	/// applied in the runtime after those N blocks have passed.
 	///
 	/// The consensus protocol will coordinate the handoff externally.
@@ -83,7 +83,7 @@ decl_runtime_apis! {
 		/// Check a digest for forced changes.
 		/// Return `None` if there are no forced changes. Otherwise, return a
 		/// tuple containing the pending change and the median last finalized
-		/// block number at the time the change was signalled.
+		/// block number at the time the change was signaled.
 		///
 		/// Added in version 2.
 		///

substrate/core/finality-grandpa/src/authorities.rs

@@ -136,7 +136,7 @@ where
 		let hash = pending.canon_hash.clone();
 		let number = pending.canon_height.clone();
 
-		debug!(target: "afg", "Inserting potential standard set change signalled at block {:?} \
+		debug!(target: "afg", "Inserting potential standard set change signaled at block {:?} \
 							   (delayed by {:?} blocks).",
 			   (&number, &hash), pending.delay);
 
@@ -257,7 +257,7 @@ where
 			.take_while(|c| c.effective_number() <= best_number) // to prevent iterating too far
 			.filter(|c| c.effective_number() == best_number)
 		{
-			// check if the given best block is in the same branch as the block that signalled the change.
+			// check if the given best block is in the same branch as the block that signaled the change.
 			if is_descendent_of(&change.canon_hash, &best_hash)? {
 				// apply this change: make the set canonical
 				info!(target: "finality", "Applying authority set change forced at block #{:?}",
@@ -381,7 +381,7 @@ pub(crate) enum DelayKind<N> {
 	/// Depth in finalized chain.
 	Finalized,
 	/// Depth in best chain. The median last finalized block is calculated at the time the
-	/// change was signalled.
+	/// change was signaled.
 	Best { median_last_finalized: N },
 }
 
@@ -550,7 +550,7 @@ mod tests {
 			vec![&change_b, &change_a],
 		);
 
-		// finalizing "hash_c" won't enact the change signalled at "hash_a" but it will prune out "hash_b"
+		// finalizing "hash_c" won't enact the change signaled at "hash_a" but it will prune out "hash_b"
 		let status = authorities.apply_standard_changes("hash_c", 11, &is_descendent_of(|base, hash| match (*base, *hash) {
 			("hash_a", "hash_c") => true,
 			("hash_b", "hash_c") => false,
@@ -564,7 +564,7 @@ mod tests {
 			vec![&change_a],
 		);
 
-		// finalizing "hash_d" will enact the change signalled at "hash_a"
+		// finalizing "hash_d" will enact the change signaled at "hash_a"
 		let status = authorities.apply_standard_changes("hash_d", 15, &is_descendent_of(|base, hash| match (*base, *hash) {
 			("hash_a", "hash_d") => true,
 			_ => unreachable!(),

substrate/core/finality-grandpa/src/environment.rs

@@ -125,7 +125,7 @@ impl<Block: BlockT<Hash=H256>, B, E, N, RA> grandpa::Chain<Block::Hash, NumberFo
 
 	fn best_chain_containing(&self, block: Block::Hash) -> Option<(Block::Hash, NumberFor<Block>)> {
 		// NOTE: when we finalize an authority set change through the sync protocol the voter is
-		//       signalled asynchronously. therefore the voter could still vote in the next round
+		//       signaled asynchronously. therefore the voter could still vote in the next round
 		//       before activating the new set. the `authority_set` is updated immediately thus we
 		//       restrict the voter based on that.
 		if self.set_id != self.authority_set.inner().read().current().0 {

substrate/core/finality-grandpa/src/import.rs

@@ -570,7 +570,7 @@ impl<B, E, Block: BlockT<Hash=H256>, RA, PRA> GrandpaBlockImport<B, E, Block, RA
 		match result {
 			Err(CommandOrError::VoterCommand(command)) => {
 				info!(target: "finality", "Imported justification for block #{} that triggers \
-					command {}, signalling voter.", number, command);
+					command {}, signaling voter.", number, command);
 
 				if let Err(e) = self.send_voter_commands.unbounded_send(command) {
 					return Err(ConsensusErrorKind::ClientImport(e.to_string()).into());

substrate/core/finality-grandpa/src/tests.rs

@@ -297,7 +297,7 @@ impl Core<Block> for RuntimeApi {
 		unimplemented!("Not required for testing!")
 	}
 
-	fn initialise_block_runtime_api_impl(
+	fn initialize_block_runtime_api_impl(
 		&self,
 		_: &BlockId<Block>,
 		_: ExecutionContext,