Update dependencies, including Babel to v6 and zeroUnits fix.

Gemfile

@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll', '~> 3.1.2'
+  gem 'jekyll', '~> 3.3.0'
   gem 'jekyll-redirect-from', '~> 0.11.0'
   gem 'jekyll-sitemap', '~> 0.11.0'
-  gem 'scss_lint', '~> 0.49.0'
+  gem 'scss_lint', '~> 0.50.2'
 end

Gemfile.lock

@@ -2,16 +2,18 @@ GEM
   remote: https://rubygems.org/
   specs:
     addressable (2.4.0)
-    colorator (0.1)
-    ffi (1.9.13)
-    ffi (1.9.13-x64-mingw32)
-    jekyll (3.1.6)
-      colorator (~> 0.1)
+    colorator (1.1.0)
+    ffi (1.9.14)
+    forwardable-extended (2.6.0)
+    jekyll (3.3.0)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
       kramdown (~> 1.3)
       liquid (~> 3.0)
       mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
       rouge (~> 1.7)
       safe_yaml (~> 1.0)
     jekyll-redirect-from (0.11.0)
@@ -20,34 +22,35 @@ GEM
       sass (~> 3.4)
     jekyll-sitemap (0.11.0)
       addressable (~> 2.4.0)
-    jekyll-watch (1.4.0)
+    jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
-    kramdown (1.11.1)
+    kramdown (1.12.0)
     liquid (3.0.6)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    rake (11.2.2)
+    pathutil (0.14.0)
+      forwardable-extended (~> 2.6)
+    rake (11.3.0)
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
     rouge (1.11.1)
     safe_yaml (1.0.4)
     sass (3.4.22)
-    scss_lint (0.49.0)
+    scss_lint (0.50.2)
       rake (>= 0.9, < 12)
       sass (~> 3.4.20)
 
 PLATFORMS
   ruby
-  x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.1.2)
+  jekyll (~> 3.3.0)
   jekyll-redirect-from (~> 0.11.0)
   jekyll-sitemap (~> 0.11.0)
-  scss_lint (~> 0.49.0)
+  scss_lint (~> 0.50.2)
 
 BUNDLED WITH
-   1.12.5
+   1.13.2

Gruntfile.js

@@ -58,8 +58,7 @@ module.exports = function (grunt) {
     babel: {
       dev: {
         options: {
-          sourceMap: true,
-          modules: 'ignore'
+          sourceMap: true
         },
         files: {
           'js/dist/util.js'      : 'js/src/util.js',
@@ -77,7 +76,7 @@ module.exports = function (grunt) {
       },
       dist: {
         options: {
-          modules: 'ignore'
+          extends: '../../js/.babelrc'
         },
         files: {
           '<%= concat.bootstrap.dest %>' : '<%= concat.bootstrap.dest %>'
@@ -87,8 +86,8 @@ module.exports = function (grunt) {
 
     stamp: {
       options: {
-        banner: '<%= banner %>\n<%= jqueryCheck %>\n<%= jqueryVersionCheck %>\n+function ($) {\n',
-        footer: '\n}(jQuery);'
+        banner: '<%= banner %>\n<%= jqueryCheck %>\n<%= jqueryVersionCheck %>\n+function () {\n',
+        footer: '\n}();'
       },
       bootstrap: {
         files: {
@@ -102,8 +101,7 @@ module.exports = function (grunt) {
         // Custom function to remove all export and import statements
         process: function (src) {
           return src.replace(/^(export|import).*/gm, '');
-        },
-        stripBanners: false
+        }
       },
       bootstrap: {
         src: [
@@ -165,10 +163,7 @@ module.exports = function (grunt) {
 
     cssmin: {
       options: {
-        // TODO: disable `zeroUnits` optimization once clean-css 3.2 is released
-        //    and then simplify the fix for https://github.com/twbs/bootstrap/issues/14837 accordingly
-        compatibility: 'ie9',
-        keepSpecialComments: '*',
+        compatibility: 'ie9,-properties.zeroUnits',
         sourceMap: true,
         // sourceMapInlineSources: true,
         advanced: false

_config.yml

@@ -49,7 +49,7 @@ cdn:
   css_hash:       "sha384-2hfp1SzUoho7/TsGGGDaFdsuuDL0LX2hnUp6VkX3CUQ2K4K+xjboZdsXyp4oUHZj"
   js:             https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.4/js/bootstrap.min.js
   js_hash:        "sha384-VjEeINv9OSwtWFLAtmc4JCtEJXXBub00gtSnszmspDLCtC0I4z4nqz7rEFbIZLLU"
-  jquery:         https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js
-  jquery_hash:    "sha384-THPy051/pYDQGanwU6poAc/hOdQxjnOEXzbT+OuUAFqNqFjL+4IGLBgCJC3ZOShY"
-  tether:         https://cdnjs.cloudflare.com/ajax/libs/tether/1.2.0/js/tether.min.js
-  tether_hash:    "sha384-Plbmg8JY28KFelvJVai01l8WyZzrYWG825m+cZ0eDDS1f7d/js6ikvy1+X+guPIB"
+  jquery:         https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js
+  jquery_hash:    "sha384-3ceskX3iaEnIogmQchP8opvBy3Mi7Ce34nWjpBIwVTHfGYWQS9jwHDVRnpKKHJg7"
+  tether:         https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.7/js/tether.min.js
+  tether_hash:    "sha384-XTs3FgkjiBgo8qjEjBk0tGmf3wPrWtA6coPfQDfFEY8AnYJwjalXCiosYRBIBZX8"

bower.json

@@ -30,6 +30,6 @@
   ],
   "dependencies": {
     "jquery": "1.9.1 - 3",
-    "tether": "^1.1.1"
+    "tether": "^1.3.7"
   }
 }