Update dev-dependencies

Author: wooorm

package.json

@@ -33,18 +33,18 @@
     "unist-util-is": "^4.0.0"
   },
   "devDependencies": {
-    "@types/tape": "^4.2.33",
+    "@types/tape": "^4.0.0",
     "browserify": "^16.0.0",
-    "dtslint": "^2.0.2",
-    "nyc": "^14.0.0",
+    "dtslint": "^3.0.0",
+    "nyc": "^15.0.0",
     "prettier": "^1.0.0",
     "remark": "^11.0.0",
     "remark-cli": "^7.0.0",
     "remark-preset-wooorm": "^6.0.0",
     "tape": "^4.0.0",
     "tinyify": "^2.0.0",
-    "typescript": "^3.7.2",
-    "xo": "^0.25.0"
+    "typescript": "^3.3.0",
+    "xo": "^0.26.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier --write \"**/*.{js,ts}\" && xo --fix",

tslint.json

@@ -2,6 +2,7 @@
   "extends": "dtslint/dtslint.json",
   "rules": {
     "semicolon": false,
-    "whitespace": false
+    "whitespace": false,
+    "strict-export-declare-modifiers": false
   }
 }