Update dev-dependencies

Author: wooorm

package.json

@@ -52,17 +52,17 @@
     "zwitch": "^1.0.0"
   },
   "devDependencies": {
-    "dtslint": "^3.0.0",
+    "dtslint": "^4.0.0",
     "nyc": "^15.0.0",
     "prettier": "^2.0.0",
-    "remark-cli": "^8.0.0",
-    "remark-preset-wooorm": "^7.0.0",
+    "remark-cli": "^9.0.0",
+    "remark-preset-wooorm": "^8.0.0",
     "tape": "^5.0.0",
     "unist-builder": "^2.0.0",
-    "xo": "^0.32.0"
+    "xo": "^0.34.0"
   },
   "scripts": {
-    "format": "remark . -qfo && prettier . --write && xo --fix",
+    "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
     "test-api": "node test",
     "test-coverage": "nyc --reporter lcov tape test/index.js",
     "test-types": "dtslint types",