Update istanbul to version 0.4.0 🚀
@ -51,7 +51,7 @@
"gobble-cli": "^0.5.0",
"gobble-rollup": "^0.10.0",
"gobble-rollup-babel": "^0.5.0",
"istanbul": "^0.3.20",
"istanbul": "^0.4.0",
"magic-string": "^0.7.0",
"mocha": "^2.2.4",
"remap-istanbul": "^0.3.0",