update to the latest path-to-regexp (2.2.1) (#238)

fixes #232

package.json

@@ -60,7 +60,7 @@
   ],
   "dependencies": {
     "@vaadin/vaadin-usage-statistics": "^2.0.0-alpha4",
-    "path-to-regexp": "2.2.0"
+    "path-to-regexp": "2.2.1"
   },
   "devDependencies": {
     "babel-core": "^6.26.3",

yarn.lock

@@ -7193,9 +7193,9 @@ [email protected]:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
 
-[email protected].0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-2.2.0.tgz#80f0ff45c1e0e641da74df313644eaf115050972"
+[email protected].1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-2.2.1.tgz#90b617025a16381a879bc82a38d4e8bdeb2bcf45"
 
 path-to-regexp@^1.0.1, path-to-regexp@^1.7.0:
   version "1.7.0"
@@ -8531,8 +8531,8 @@ rollup-pluginutils@^2.0.1:
     micromatch "^2.3.11"
 
 rollup@*:
-  version "0.63.2"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.63.2.tgz#d27619204cd025c948d740972fb1d0da6aa64481"
+  version "0.63.3"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.63.3.tgz#a242293c23c9ecb24e976816d590d69a36fe9376"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"