Upgrade prettier to 1.17

package.json

@@ -76,7 +76,7 @@
     "lerna": "^3.13.2",
     "lint-staged": "^8.1.5",
     "opn-cli": "^4.1.0",
-    "prettier": "^1.16.4",
+    "prettier": "^1.17.0",
     "tslint": "^5.15.0",
     "tslint-config-prettier": "^1.18.0",
     "tslint-plugin-prettier": "^2.0.1",

yarn.lock

@@ -8355,10 +8355,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^1.16.4:
-  version "1.16.4"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.4.tgz#73e37e73e018ad2db9c76742e2647e21790c9717"
-  integrity sha512-ZzWuos7TI5CKUeQAtFd6Zhm2s6EpAD/ZLApIhsF9pRvRtM1RFo61dM/4MSRUA0SuLugA/zgrZD8m0BaY46Og7g==
+prettier@^1.17.0:
+  version "1.17.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.17.0.tgz#53b303676eed22cc14a9f0cec09b477b3026c008"
+  integrity sha512-sXe5lSt2WQlCbydGETgfm1YBShgOX4HxQkFPvbxkcwgDvGDeqVau8h+12+lmSVlP3rHPz0oavfddSZg/q+Szjw==
 
 pretty-error@^2.0.2:
   version "2.1.1"