Update dependencies.

package.json

@@ -46,15 +46,15 @@
   "license": "MIT",
   "dependencies": {
     "jquery": ">=1.9.1",
-    "tether": "^1.3.7"
+    "tether": "^1.4.0"
   },
   "devDependencies": {
-    "autoprefixer": "^6.5.0",
-    "babel-eslint": "^7.0.0",
+    "autoprefixer": "^6.6.1",
+    "babel-eslint": "^7.1.1",
     "babel-plugin-transform-es2015-modules-strip": "^0.1.0",
-    "babel-preset-es2015": "^6.16.0",
+    "babel-preset-es2015": "^6.18.0",
     "clean-css": "^3.4.23",
-    "eslint": "^3.7.1",
+    "eslint": "^3.12.2",
     "grunt": "^1.0.1",
     "grunt-babel": "^6.0.0",
     "grunt-build-control": "^0.7.1",
@@ -66,7 +66,7 @@
     "grunt-contrib-qunit": "^1.2.0",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-exec": "^1.0.1",
-    "grunt-html": "^8.0.2",
+    "grunt-html": "^8.1.0",
     "grunt-jekyll": "^0.4.4",
     "grunt-saucelabs": "^9.0.0",
     "grunt-stamp": "^0.3.0",
@@ -75,8 +75,8 @@
     "load-grunt-tasks": "^3.5.2",
     "node-sass": "^4.1.1",
     "postcss-cli": "^2.6.0",
-    "postcss-flexbugs-fixes": "^2.0.0",
-    "shelljs": "^0.7.4",
+    "postcss-flexbugs-fixes": "^2.1.0",
+    "shelljs": "^0.7.5",
     "shx": "^0.2.1",
     "time-grunt": "^1.4.0",
     "uglify-js": "^2.7.5"