Bump dependencies

package.json

@@ -75,9 +75,9 @@
 		"fs-write-stream-atomic": "^1.0.2",
 		"get-res": "^3.0.0",
 		"lodash.template": "^4.0.1",
-		"log-symbols": "^1.0.2",
+		"log-symbols": "^2.1.0",
 		"make-dir": "^1.0.0",
-		"mem": "^1.1.0",
+		"mem": "^3.0.0",
 		"plur": "^2.0.0",
 		"protocolify": "^2.0.0",
 		"screenshot-stream": "^4.1.0",
@@ -87,23 +87,23 @@
 	"devDependencies": {
 		"ava": "*",
 		"babel-cli": "^6.7.5",
-		"babel-eslint": "^7.1.1",
+		"babel-eslint": "^8.0.1",
 		"babel-plugin-add-module-exports": "^0.2.1",
 		"babel-plugin-transform-async-to-generator": "^6.7.4",
 		"babel-plugin-transform-flow-strip-types": "^6.14.0",
 		"babel-plugin-transform-runtime": "^6.7.5",
 		"babel-preset-es2015-node4": "^2.1.0",
 		"cookie": "^0.3.1",
-		"coveralls": "^2.11.2",
-		"flow-bin": "^0.49.1",
+		"coveralls": "^3.0.0",
+		"flow-bin": "^0.57.3",
 		"get-port": "^3.0.0",
 		"get-stream": "^3.0.0",
 		"image-size": "^0.6.0",
 		"nyc": "^11.0.3",
 		"path-exists": "^3.0.0",
 		"pify": "^3.0.0",
 		"png-js": "^0.1.1",
-		"sinon": "^2.0.0",
+		"sinon": "^4.0.1",
 		"xo": "*"
 	},
 	"babel": {