Use custom hasher for Map (#857)

* Use blake2 instead of two_x

* Add v4

* Update to new v4 static

* Update json

* Revert

* Use hasher enum

* Fix metadata v4 test

* Fix metadata v4 test

* Fix versioned metadata

* refactor & clean

* Use consistent naming

* Make jsons consistent

* Add backward compat

* Fix tests

* Start working on type-storage

* Fix output

* Grumble

* Update to latest static

* Clean code

* Fix imports

* Remove useless imports

* Fix tests

* Use prettier output for toJSON in metadata

* Implement different hashers

* Remove generic storageKey

* Bump version

* Add backwards-compat

* Fix hashing function, use Twox128

* Grumbles

* Add tests

packages/rpc-rx/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-rx",
-  "version": "0.77.0-beta.7",
+  "version": "0.77.0",
   "description": "An RxJs wrapper around the Polkadot JS API",
   "main": "index.js",
   "keywords": [
@@ -30,8 +30,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-rx#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.3",
-    "@polkadot/rpc-core": "^0.77.0-beta.7",
-    "@polkadot/rpc-provider": "^0.77.0-beta.7",
+    "@polkadot/rpc-core": "^0.77.0",
+    "@polkadot/rpc-provider": "^0.77.0",
     "@types/memoizee": "^0.4.2",
     "@types/rx": "^4.1.1",
     "memoizee": "^0.4.14",