Update to store 6.4.1 to consume a memory leak fix. (#36)

Author: SethDavenport

packages/example-app/package.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@angular-redux/form": "^6.3.0",
     "@angular-redux/router": "^6.3.0",
-    "@angular-redux/store": "^6.4.0",
+    "@angular-redux/store": "^6.4.1",
     "@angular/common": "^4.1.0",
     "@angular/compiler": "^4.1.0",
     "@angular/core": "^4.1.0",

packages/example-app/yarn.lock

@@ -12,9 +12,9 @@
   version "6.3.0"
   resolved "https://registry.yarnpkg.com/@angular-redux/router/-/router-6.3.0.tgz#0ece17ad5a4eb8a40f54d7e3a67e67598f03d2cd"
 
-"@angular-redux/store@^6.4.0":
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/@angular-redux/store/-/store-6.4.0.tgz#0659c07ff9026f3a570ab283e857bfcf399dd99c"
+"@angular-redux/store@^6.4.1":
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/@angular-redux/store/-/store-6.4.1.tgz#40c9f001a4f09a9caa02310341c702da13e8755b"
 
 "@angular/cli@1.0.1":
   version "1.0.1"