fix(html): update cycle/dom to 21, update snabbdom

BREAKING CHANGES:
This package now uses cycle/dom version 21 or higher. See the release
notes for that package.

html/package.json

@@ -34,9 +34,9 @@
   "typings": "lib/cjs/index.d.ts",
   "types": "lib/cjs/index.d.ts",
   "dependencies": {
-    "@cycle/dom": ">=20.4.0",
+    "@cycle/dom": "^22.0.0-rc.0",
     "@cycle/run": "^5.1.0-rc.1",
-    "snabbdom": "0.7.1",
+    "snabbdom": "0.7.2",
     "snabbdom-to-html": "5.1.1",
     "xstream": "*"
   },

html/shrinkwrap.yaml

@@ -1,7 +1,7 @@
 dependencies:
-  '@cycle/dom': 20.4.0
+  '@cycle/dom': 22.0.0-rc.0
   '@cycle/run': 5.1.0-rc.1
-  snabbdom: 0.7.1
+  snabbdom: 0.7.2
   snabbdom-to-html: 5.1.1
   xstream: 11.7.0
 devDependencies:
@@ -17,12 +17,11 @@ devDependencies:
   tslint: 5.11.0
   typescript: 3.1.3
 packages:
-  /@cycle/dom/20.4.0:
+  /@cycle/dom/22.0.0-rc.0:
     dependencies:
       '@cycle/run': 5.1.0-rc.1
-      es6-map: 0.1.5
-      snabbdom: 0.7.0
-      snabbdom-selector: 3.0.0
+      snabbdom: 0.7.2
+      snabbdom-selector: 4.0.0
       xstream: 11.7.0
     dev: false
     engines:
@@ -495,10 +494,10 @@ packages:
     dev: false
     resolution:
       integrity: sha512-rz/Q8nh2RiY9echnpQdIQpGsvqPyjfEcFZ636tlggw59WlcsRrWfctYIVlGHZxUzcX025lw69oTCqceGdeXoGg==
-  /snabbdom/0.7.0:
+  /snabbdom/0.7.2:
     dev: false
     resolution:
-      integrity: sha512-LCg6lH9p2OD5n52SI4LlpYmDW2bscxsyN7rhnGJB/R3LQy/FdJfqNBM5aVST+zOfM4OdKFl8pxVUhjGsPtQA1w==
+      integrity: sha512-rDY283fYUB/3z2tjXsRRccsbVJqmGLtP+iI1tfa1DDHo2xZ49cq1leq9JmYyvZQhESuYJRY/is6WYhP2UuiRVg==
   /source-map-support/0.5.9:
     dependencies:
       buffer-from: 1.1.1
@@ -644,7 +643,7 @@ registry: 'https://registry.npmjs.org/'
 shrinkwrapMinorVersion: 9
 shrinkwrapVersion: 3
 specifiers:
-  '@cycle/dom': '>=20.4.0'
+  '@cycle/dom': ^22.0.0-rc.0
   '@cycle/isolate': ^4.1.0-rc.0
   '@cycle/run': ^5.1.0-rc.1
   '@types/mocha': ^5.2.5
@@ -653,7 +652,7 @@ specifiers:
   mocha: ^5.2.0
   simulant: ^0.2.2
   sinon: ^6.3.5
-  snabbdom: 0.7.1
+  snabbdom: 0.7.2
   snabbdom-pragma: ^2.7.0
   snabbdom-to-html: 5.1.1
   ts-node: ^7.0.1