chore(deps): pin dependencies

package.json

@@ -58,32 +58,32 @@
     "url": "https://github.com/scurker/currency.js/issues"
   },
   "devDependencies": {
-    "@babel/cli": "^7.1.0",
-    "@babel/core": "^7.1.0",
-    "@babel/node": "^7.0.0",
-    "@babel/preset-env": "^7.1.0",
-    "@babel/preset-flow": "^7.0.0",
-    "@babel/register": "^7.0.0",
-    "@scurker/eslint-config": "^1.1.4",
-    "ava": "^1.0.0-beta.8",
-    "cheerio": "^1.0.0-rc.2",
-    "eslint": "^5.6.0",
-    "flow-bin": "^0.82.0",
-    "google-closure-compiler-js": "^20180610.0.0",
-    "gzip-size": "^5.0.0",
-    "handlebars": "^4.0.12",
-    "highlight.js": "^9.12.0",
-    "html-minifier": "^3.5.20",
-    "matchdep": "^2.0.0",
-    "metalsmith": "^2.3.0",
-    "metalsmith-ignore": "^1.0.0",
-    "metalsmith-markdown": "^1.0.1",
-    "npm-run-all": "^4.1.3",
-    "nyc": "^13.0.1",
-    "pretty-bytes": "^5.1.0",
-    "rollup": "^0.66.0",
-    "rollup-plugin-babel": "^4.0.3",
-    "typescript": "^3.0.3"
+    "@babel/cli": "7.1.0",
+    "@babel/core": "7.1.0",
+    "@babel/node": "7.0.0",
+    "@babel/preset-env": "7.1.0",
+    "@babel/preset-flow": "7.0.0",
+    "@babel/register": "7.0.0",
+    "@scurker/eslint-config": "1.1.4",
+    "ava": "1.0.0-beta.8",
+    "cheerio": "1.0.0-rc.2",
+    "eslint": "5.6.0",
+    "flow-bin": "0.82.0",
+    "google-closure-compiler-js": "20180610.0.0",
+    "gzip-size": "5.0.0",
+    "handlebars": "4.0.12",
+    "highlight.js": "9.12.0",
+    "html-minifier": "3.5.20",
+    "matchdep": "2.0.0",
+    "metalsmith": "2.3.0",
+    "metalsmith-ignore": "1.0.0",
+    "metalsmith-markdown": "1.0.1",
+    "npm-run-all": "4.1.3",
+    "nyc": "13.0.1",
+    "pretty-bytes": "5.1.0",
+    "rollup": "0.66.2",
+    "rollup-plugin-babel": "4.0.3",
+    "typescript": "3.0.3"
   },
   "nyc": {
     "include": [