Aggregate all liquidity restrictions in a single place (#1921)

* Clean up session key rotation

* Fix build

* Bump version

* Introduce feature to balances.

* Move staking locking logic over to central point

* ^^^ rest

* First part of assimilation

* More assimilation

* More assimilation

* Fix most tests

* Fix build

* Move Balances to new locking system

* :q!

* Bump runtime version

* Build runtime

* Convenience function

* Test fix.

* Whitespace

* Improve type legibility.

* Fix comment.

* More tests.

* More tests.

* Bump version

* Caps

* Whitespace

* Whitespace

* Remove unneeded function.

substrate/node-template/runtime/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
 [dependencies]
-serde = { version = "1.0", default-features = false }
+serde = { version = "1.0", optional = true }
 serde_derive = { version = "1.0", optional = true }
 safe-mix = { version = "1.0", default-features = false }
 parity-codec = { version = "3.1", default-features = false, features = ["derive"] }
@@ -47,7 +47,7 @@ std = [
 	"sudo/std",
 	"version/std",
 	"serde_derive",
-	"serde/std",
+	"serde",
 	"safe-mix/std",
 	"consensus-aura/std",
 ]

substrate/node-template/runtime/src/lib.rs

@@ -158,8 +158,6 @@ impl balances::Trait for Runtime {
 	type OnFreeBalanceZero = ();
 	/// What to do if a new account is created.
 	type OnNewAccount = Indices;
-	/// Restrict whether an account can transfer funds. We don't place any further restrictions.
-	type EnsureAccountLiquid = ();
 	/// The uniquitous event type.
 	type Event = Event;
 }

substrate/node-template/runtime/wasm/Cargo.lock

@@ -50,6 +50,11 @@ name = "bitflags"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "bitmask"
+version = "0.5.0"
+source = "git+https://github.com/paritytech/bitmask#c2d8d196e30b018d1385be8357fdca61b978facf"
+
 [[package]]
 name = "blake2-rfc"
 version = "0.2.18"
@@ -1276,6 +1281,7 @@ version = "0.1.0"
 dependencies = [
  "hex-literal 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-codec 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-codec-derive 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 0.1.0",
  "sr-std 0.1.0",
@@ -1401,6 +1407,7 @@ dependencies = [
  "parity-codec 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-io 0.1.0",
  "sr-primitives 0.1.0",
  "sr-std 0.1.0",
  "srml-consensus 0.1.0",
@@ -1429,6 +1436,7 @@ dependencies = [
 name = "srml-support"
 version = "0.1.0"
 dependencies = [
+ "bitmask 0.5.0 (git+https://github.com/paritytech/bitmask)",
  "hex-literal 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "once_cell 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-codec 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1499,7 +1507,6 @@ dependencies = [
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 0.1.0",
  "sr-std 0.1.0",
- "srml-consensus 0.1.0",
  "srml-support 0.1.0",
  "srml-system 0.1.0",
  "substrate-inherents 0.1.0",
@@ -2079,6 +2086,7 @@ dependencies = [
 "checksum backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)" = "797c830ac25ccc92a7f8a7b9862bde440715531514594a6154e3d4a54dd769b6"
 "checksum base58 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5024ee8015f02155eee35c711107ddd9a9bf3cb689cf2a9089c97e79b6e1ae83"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
+"checksum bitmask 0.5.0 (git+https://github.com/paritytech/bitmask)" = "<none>"
 "checksum blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
 "checksum block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1339a1042f5d9f295737ad4d9a6ab6bf81c84a933dba110b9200cd6d1448b814"
 "checksum block-buffer 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49665c62e0e700857531fa5d3763e91b539ff1abeebd56808d378b495870d60d"