Update to parity-scale-codec (#3232)

* WIP: update codec

* WIP

* compiling

* WIP

* rename parity-scale-codec to codec

* WIP

* fix

* remove old comments

* use published crates

* fix expected error msg

* bump version

* fmt and fix

* remove old comment

* fix wrong decoding impl

* implement encode like for structures

* undo removal of old pending changes

* trailingzeroinput

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>
Co-Authored-By: DemiMarie-parity <48690212+DemiMarie-parity@users.noreply.github.com>

* update codec

* fmt

* version is 1.0.0

* show more error

* fmt

substrate/srml/support/test/tests/final_keys.rs

@@ -17,7 +17,7 @@
 use runtime_io::{with_externalities, Blake2Hasher};
 use srml_support::{StorageValue, StorageMap, StorageDoubleMap};
 use srml_support::storage::unhashed;
-use parity_codec::{Encode, Decode};
+use codec::{Encode, Decode};
 
 pub trait Trait {
 	type Origin;

substrate/srml/support/test/tests/genesisconfig.rs

@@ -15,7 +15,7 @@
 // along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
 
 pub trait Trait {
-    type BlockNumber: parity_codec::Codec + Default;
+    type BlockNumber: codec::Codec + Default;
     type Origin;
 }
 
@@ -41,4 +41,4 @@ fn init_genesis_config() {
 	GenesisConfig::<Test> {
 		t: Default::default(),
 	};
-}
+}

substrate/srml/support/test/tests/instance.rs

@@ -45,7 +45,7 @@ mod module1 {
 		type Event: From<Event<Self, I>> + Into<<Self as system::Trait>::Event>;
 		type Origin: From<Origin<Self, I>>;
 		type SomeParameter: Get<u32>;
-		type GenericType: Default + Clone + parity_codec::Codec;
+		type GenericType: Default + Clone + codec::Codec;
 	}
 
 	srml_support::decl_module! {