Merge pull request #261 from ethereum/dependencies

Upgrade dependencies

Author: axic

package.json

@@ -41,16 +41,16 @@
   "dependencies": {
     "fs-extra": "^0.30.0",
     "memorystream": "^0.3.1",
-    "require-from-string": "^1.1.0",
-    "semver": "^5.3.0",
+    "require-from-string": "^2.0.0",
+    "semver": "^5.5.0",
     "yargs": "^11.0.0"
   },
   "devDependencies": {
     "coveralls": "^3.0.0",
-    "ethereumjs-util": "^5.1.4",
+    "ethereumjs-util": "^5.2.0",
     "istanbul": "^0.4.5",
-    "semistandard": "^11.0.0",
-    "tape": "^4.5.1",
+    "semistandard": "^12.0.0",
+    "tape": "^4.9.1",
     "tape-spawn": "^1.4.2"
   },
   "semistandard": {