Phragmén Validator Election (#1915)

* adds first draft phragmen with tuned tests and sr-primitives

* fix a few docs and code styles

* clean, organize and finish remaining test cases

* more and more tests

* update edge cases behavior and relavent tests

* fix global test issues

* updated wasm files

* all tests fixed

* cleanup

* fix some global issues

* fix global tests

* bump versions

* fix typo

* first step toward extracting phragmen

* Fix most of the grumbles.

* fix rest of the grumbles

* spaces to tabs

* update wasm

* Removed nightly feature.

* More tests

* Fix broken tests.

* Bump and update wasm.

substrate/node/runtime/src/lib.rs

@@ -54,6 +54,7 @@ pub use timestamp::Call as TimestampCall;
 pub use balances::Call as BalancesCall;
 pub use runtime_primitives::{Permill, Perbill};
 pub use support::StorageValue;
+pub use staking::StakerStatus;
 
 /// Runtime version.
 pub const VERSION: RuntimeVersion = RuntimeVersion {
@@ -61,7 +62,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	impl_name: create_runtime_str!("substrate-node"),
 	authoring_version: 10,
 	spec_version: 35,
-	impl_version: 35,
+	impl_version: 36,
 	apis: RUNTIME_API_VERSIONS,
 };