Use EncodeLike for storages traits (#3676)

* impl

* patch

* lock

* some refactor

* some avoided copy

* new api without ref for doublemap

* fix

* version bump

* fix

* point to incoming release

* use codec latest

* bumpd impl version

* fix unused

* fix

* Update srml/support/src/storage/mod.rs

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

substrate/srml/support/src/traits.rs

@@ -19,7 +19,7 @@
 //! NOTE: If you're looking for `parameter_types`, it has moved in to the top-level module.
 
 use rstd::{prelude::*, result, marker::PhantomData, ops::Div};
-use codec::{Codec, Encode, Decode};
+use codec::{FullCodec, Codec, Encode, Decode};
 use primitives::u32_trait::Value as U32;
 use sr_primitives::{
 	ConsensusEngineId,
@@ -254,7 +254,7 @@ pub enum SignedImbalance<B, P: Imbalance<B>>{
 impl<
 	P: Imbalance<B, Opposite=N>,
 	N: Imbalance<B, Opposite=P>,
-	B: SimpleArithmetic + Codec + Copy + MaybeSerializeDebug + Default,
+	B: SimpleArithmetic + FullCodec + Copy + MaybeSerializeDebug + Default,
 > SignedImbalance<B, P> {
 	pub fn zero() -> Self {
 		SignedImbalance::Positive(P::zero())
@@ -317,7 +317,7 @@ impl<
 /// Abstraction over a fungible assets system.
 pub trait Currency<AccountId> {
 	/// The balance of an account.
-	type Balance: SimpleArithmetic + Codec + Copy + MaybeSerializeDebug + Default;
+	type Balance: SimpleArithmetic + FullCodec + Copy + MaybeSerializeDebug + Default;
 
 	/// The opaque token type for an imbalance. This is returned by unbalanced operations
 	/// and must be dealt with. It may be dropped but cannot be cloned.
@@ -615,7 +615,7 @@ bitmask! {
 }
 
 pub trait Time {
-	type Moment: SimpleArithmetic + Codec + Clone + Default + Copy;
+	type Moment: SimpleArithmetic + FullCodec + Clone + Default + Copy;
 
 	fn now() -> Self::Moment;
 }