Update to latest Foundation (6.3)

Latest release (from 15 Dec;
https://github.com/zurb/foundation-sites/releases/tag/v6.3.0)

libraries/foundation-6/.eslintrc

@@ -12,7 +12,6 @@
   "globals": {
     "Foundation": true
     },
-  "parser": "babel-eslint",
   "parserOptions": {
     "ecmaFeatures": {
       "impliedStrict": true,
@@ -62,4 +61,4 @@
     "valid-typeof": 2,
     "wrap-iife": [2, "inside"]
   }
-}
\ No newline at end of file
+}

libraries/foundation-6/.github/ISSUE_TEMPLATE.md

 <!-- Please only file bugs with Foundation on GitHub. If you've got a more general question about how to use Foundation, we can help you on the Foundation Forum: http://foundation.zurb.com/forum -->
 
-**How can we reproduce this bug?**
+#### How to reproduce this bug:
 
 1. Step one
 2. Step two
 3. Step three
 
-**What did you expect to happen?**
+#### What should happen:
 
-**What happened instead?**
+#### What happened instead:
 
-**Test case:**
+#### Test case:
 
-Give us a link to a CodePen or JSFiddle that recreates the issue.
+<!-- Give us a link to a CodePen or JSFiddle that recreates the issue. -->
 
-- [CodePen with Foundation 6 and MotionUI](http://codepen.io/rafibomb/pen/xVVGOB)
-- [CodePen with Foundation 6, Flexbox grid and MotionUI](http://codepen.io/rafibomb/pen/jqqPra)
+- [CodePen with Foundation 6.2.4 and MotionUI](https://codepen.io/ncoden/pen/gLEoEB)
+- [CodePen with Foundation 6.2.4, Flexbox grid and MotionUI](https://codepen.io/ncoden/pen/yVwpZN)
+
+- [CodePen with Foundation 6.3.0 and MotionUI](https://codepen.io/ncoden/pen/oYVpMe)
+- [CodePen with Foundation 6.3.0, Flexbox grid and MotionUI](https://codepen.io/ncoden/pen/qqvpQj)

libraries/foundation-6/.github/PULL_REQUEST_TEMPLATE.md

 Before submitting a pull request, make sure it's targeting the right branch:
 
 - For documentation fixes, use `master`.
-- For bug fixes, use `develop`.
-- For new features, use the branch for the next minor version, which will be formatted `v6.x`.
+- For bug fixes or new features compatible with the next version, use `develop`.
+- For bug fixes incompatible with `develop`, use the support branch of the latest compatible version, which will be formatted `support/6.x`.
 
 If you're fixing a JavaScript issue, it would help to create a new test case under the folder `test/visual/` that recreates the issue and show's that it's been fixed. Run `npm test` to compile the testing folder.
 

libraries/foundation-6/.npmignore

@@ -17,3 +17,4 @@ test
 .editorconfig
 .versions
 .babelrc
+yarn.lock

libraries/foundation-6/.travis.yml

@@ -4,3 +4,5 @@ node_js:
 install:
   - npm install -g bower
   - npm install
+notifications:
+  email: false

libraries/foundation-6/.versions

@@ -11,4 +11,4 @@ modules-runtime@0.6.3
 promise@0.6.7
 random@1.0.9
 underscore@1.0.8
-zurb:foundation-sites@6.2.4
+zurb:foundation-sites@6.3.0

libraries/foundation-6/CONTRIBUTING.md

@@ -14,7 +14,7 @@ A select group of our contributors have been dubbed *Yetinauts*. They have direc
 
 Open an issue for any problem you have with the framework. If there's anything missing from your issue, such as extra context, a code sample, etc. a team member will ask for more info in the comments.
 
-Support requests are generally better suited for the [Foundation Forum](http://foundation.zurb.com), while GitHub is more appropriate for bugs. If you aren’t sure if your issue is a bug or not, don’t worry! Post your problem on GitHub and the team will help you along. Every participant is expected to follow the project's Code of Conduct so please be courteous and respectful.
+Support requests are generally better suited for the [Foundation Forum](http://foundation.zurb.com/forum), while GitHub is more appropriate for bugs. If you aren’t sure if your issue is a bug or not, don’t worry! Post your problem on GitHub and the team will help you along. Every participant is expected to follow the project's [Code of Conduct](code-of-conduct.md) so please be courteous and respectful.
 
 ## Contributions
 
@@ -22,6 +22,15 @@ All new features and bug fixes should be submitted as pull requests, so the comm
 
 When you submit a pull request, @mention a few people you’d like to help you review it. Once those people have signed off on it, the pull request can be merged! Core Team members will handle the merge itself.
 
+## Git Workflow
+
+Foundation uses a git workflow close to [GitFlow](http://nvie.com/posts/a-successful-git-branching-model/). The workflow relies on three branches:
+- **`master`**: The stable branch. It only contains the latest stable version released. Pull requests for docs improvements can be opened on it.
+- **`develop`**: The developing branch is used to prepare the next minor/major version. It always contains all the new features and bug fixes previously made, and constitutes the most up-to-date version of Foundation. Almost every pull request should be opened on this branch. When a new version is released, it is merged on `master`, a support branch is created, and `develop` now targets the next version.
+- **`support/*`**: Support branches are used to support the previous versions (i.e. `support/6.3` for `v6.3.0`) and prepare patches (i.e. `v6.3.1`). When a bug fix is compatible with supported versions, it is also merged on their support branches and patch versions can be released. If a fix is not compatible with `develop`, a pull request can be opened on the latest compatible and supported version.
+
+This git workflow was adopted as of `v6.3`, so `v6.2` and previous versions are not supported.
+
 ## Coding Standards
 
 If you aren't sure how a feature should be implemented, we recommend checking out our [standards document](https://github.com/zurb/foundation-standards), which outlines every aspect of writing framework features, from Sass to JavaScript.

libraries/foundation-6/LICENSE

-Copyright (c) 2013-2016 ZURB, inc.
+Copyright (c) 2011-2017 ZURB, inc.
 
 MIT License
 

libraries/foundation-6/README.md

@@ -42,8 +42,11 @@ These commands will run the various tests:
 - `npm run test:javascript`
 - `npm run test:visual`
 
+Testing Supported By<br/>
+<img width="160" src="http://foundation.zurb.com/sites/docs/assets/img/logos/browser-stack.svg" alt="BrowserStack"/>
+
 ## Contributing
 
 Check out our [contributing guide](http://foundation.zurb.com/develop/contribute.html) to learn how you can contribute to Foundation. You can also browse the [Help Wanted](https://github.com/zurb/foundation-sites/labels/help%20wanted) tag in our issue tracker to find things to do.
 
-Copyright (c) 2016 ZURB, inc.
+Copyright (c) 2017 ZURB, inc.

libraries/foundation-6/_vendor/normalize-scss/sass/_normalize.scss

+@import 'normalize/variables';
+@import 'normalize/vertical-rhythm';
+@import 'normalize/normalize-mixin';

libraries/foundation-6/_vendor/normalize-scss/sass/normalize/_import-now.scss

+// Import Now
+//
+// If you import this module directly, it will immediately output all the CSS
+// needed to normalize default HTML elements across all browsers.
+//
+// ```
+// @import "normalize/import-now";
+// ```
+
+@import '../normalize';
+@include normalize();

libraries/foundation-6/_vendor/normalize-scss/sass/normalize/_normalize-mixin.scss

+// Helper function for the normalize() mixin.
+@function _normalize-include($section, $exclude: null) {
+  // Initialize the global variables needed by this function.
+  @if not global_variable_exists(_normalize-include) {
+    $_normalize-include: () !global;
+    $_normalize-exclude: () !global;
+  }
+  // Since we are given 2 parameters, set the global variables.
+  @if $exclude != null {
+    $include: $section;
+    // Sass doesn't have static variables, so the work-around is to stuff these
+    // values into global variables so we can access them in future calls.
+    $_normalize-include: if(type-of($include) == 'list', $include, ($include)) !global;
+    $_normalize-exclude: if(type-of($exclude) == 'list', $exclude, ($exclude)) !global;
+    @return true;
+  }
+
+  // Check if $section is in the $include list.
+  @if index($_normalize-include, $section) {
+    @return true;
+  }
+  // If $include is set to (all), make sure $section is not in $exclude.
+  @else if not index($_normalize-exclude, $section) and index($_normalize-include, all) {
+    @return true;
+  }
+  @return false;
+}
+
+@mixin normalize($include: (all), $exclude: ()) {
+  // Initialize the helper function by passing it this mixin's parameters.
+  $init: _normalize-include($include, $exclude);
+
+  // If we've customized any font variables, we'll need extra properties.
+  @if $base-font-size != 16px
+    or $base-line-height != 24px
+    or $base-unit != 'em'
+    or $h1-font-size != 2    * $base-font-size
+    or $h2-font-size != 1.5  * $base-font-size
+    or $h3-font-size != 1.17 * $base-font-size
+    or $h4-font-size != 1    * $base-font-size
+    or $h5-font-size != 0.83 * $base-font-size
+    or $h6-font-size != 0.67 * $base-font-size {
+    $normalize-vertical-rhythm: true !global;
+  }
+
+  /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
+
+  @if _normalize-include(document) {
+    /* Document
+       ========================================================================== */
+
+    /**
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Correct the line height in all browsers.
+     * 3. Prevent adjustments of font size after orientation changes in
+     *    IE on Windows Phone and in iOS.
+     */
+
+    html {
+      font-family: $base-font-family; /* 1 */
+      @if $normalize-vertical-rhythm {
+        // Correct old browser bug that prevented accessible resizing of text
+        // when root font-size is set with px or em.
+        font-size: ($base-font-size / 16px) * 100%;
+        line-height: ($base-line-height / $base-font-size) * 1em; /* 2 */
+      }
+      @else {
+        line-height: 1.15; /* 2 */
+      }
+      -ms-text-size-adjust: 100%; /* 3 */
+      -webkit-text-size-adjust: 100%; /* 3 */
+    }
+  }
+
+  @if _normalize-include(sections) {
+    /* Sections
+       ========================================================================== */
+
+    /**
+     * Remove the margin in all browsers (opinionated).
+     */
+
+    body {
+      margin: 0;
+    }
+
+    /**
+     * Add the correct display in IE 9-.
+     */
+
+    article,
+    aside,
+    footer,
+    header,
+    nav,
+    section {
+      display: block;
+    }
+
+    /**
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
+     */
+
+    h1 {
+      @include normalize-font-size($h1-font-size);
+      @if $normalize-vertical-rhythm {
+        @include normalize-line-height($h1-font-size);
+      }
+
+      @if $normalize-vertical-rhythm {
+        /* Set 1 unit of vertical rhythm on the top and bottom margins. */
+        @include normalize-margin(1 0, $h1-font-size);
+      }
+      @else {
+        margin: 0.67em 0;
+      }
+    }
+
+    @if $normalize-vertical-rhythm {
+      h2 {
+        @include normalize-font-size($h2-font-size);
+        @include normalize-line-height($h2-font-size);
+        @include normalize-margin(1 0, $h2-font-size);
+      }
+
+      h3 {
+        @include normalize-font-size($h3-font-size);
+        @include normalize-line-height($h3-font-size);
+        @include normalize-margin(1 0, $h3-font-size);
+      }
+
+      h4 {
+        @include normalize-font-size($h4-font-size);
+        @include normalize-line-height($h4-font-size);
+        @include normalize-margin(1 0, $h4-font-size);
+      }
+
+      h5 {
+        @include normalize-font-size($h5-font-size);
+        @include normalize-line-height($h5-font-size);
+        @include normalize-margin(1 0, $h5-font-size);
+      }
+
+      h6 {
+        @include normalize-font-size($h6-font-size);
+        @include normalize-line-height($h6-font-size);
+        @include normalize-margin(1 0, $h6-font-size);
+      }
+    }
+  }
+
+  @if _normalize-include(grouping) {
+    /* Grouping content
+       ========================================================================== */
+
+    @if $normalize-vertical-rhythm {
+      /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+
+      blockquote {
+        @include normalize-margin(1 $indent-amount);
+      }
+
+      dl,
+      ol,
+      ul {
+        @include normalize-margin(1 0);
+      }
+
+      /**
+       * Turn off margins on nested lists.
+       */
+
+      ol,
+      ul {
+        ol,
+        ul {
+          margin: 0;
+        }
+      }
+
+      dd {
+        margin: 0 0 0 $indent-amount;
+      }
+
+      ol,
+      ul {
+        padding: 0 0 0 $indent-amount;
+      }
+    }
+
+    /**
+     * Add the correct display in IE 9-.
+     */
+
+    figcaption,
+    figure {
+      display: block;
+    }
+
+    /**
+     * Add the correct margin in IE 8.
+     */
+
+    figure {
+      @if $normalize-vertical-rhythm {
+        @include normalize-margin(1 $indent-amount);
+      }
+      @else {
+        margin: 1em $indent-amount;
+      }
+    }
+
+    /**
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
+     */
+
+    hr {
+      box-sizing: content-box; /* 1 */
+      height: 0; /* 1 */
+      overflow: visible; /* 2 */
+    }
+
+    /**
+     * Add the correct display in IE.
+     */
+
+    main {
+      display: block;
+    }
+
+    @if $normalize-vertical-rhythm {
+      /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+
+      p,
+      pre {
+        @include normalize-margin(1 0);
+      }
+    }
+
+    /**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+
+    pre {
+      font-family: monospace, monospace; /* 1 */
+      font-size: 1em; /* 2 */
+    }
+  }
+
+  @if _normalize-include(links) {
+    /* Links
+       ========================================================================== */
+
+    /**
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
+
+    a {
+      background-color: transparent; /* 1 */
+      -webkit-text-decoration-skip: objects; /* 2 */
+    }
+
+    /**
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
+     */
+
+    a:active,
+    a:hover {
+      outline-width: 0;
+    }
+  }
+
+  @if _normalize-include(text) {
+    /* Text-level semantics
+       ========================================================================== */
+
+    /**
+     * 1. Remove the bottom border in Firefox 39-.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+     */
+
+    abbr[title] {
+      border-bottom: none; /* 1 */
+      text-decoration: underline; /* 2 */
+      text-decoration: underline dotted; /* 2 */
+    }
+
+    /**
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
+     */
+
+    b,
+    strong {
+      font-weight: inherit;
+    }
+
+    /**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+
+    b,
+    strong {
+      font-weight: bolder;
+    }
+
+    /**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+
+    code,
+    kbd,
+    samp {
+      font-family: monospace, monospace; /* 1 */
+      font-size: 1em; /* 2 */
+    }
+
+    /**
+     * Add the correct font style in Android 4.3-.
+     */
+
+    dfn {
+      font-style: italic;
+    }
+
+    /**
+     * Add the correct background and color in IE 9-.
+     */
+
+    mark {
+      background-color: #ff0;
+      color: #000;
+    }
+
+    /**
+     * Add the correct font size in all browsers.
+     */
+
+    small {
+      font-size: 80%;
+    }
+
+    /**
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
+     */
+
+    sub,
+    sup {
+      font-size: 75%;
+      line-height: 0;
+      position: relative;
+      vertical-align: baseline;
+    }
+
+    sub {
+      bottom: -0.25em;
+    }
+
+    sup {
+      top: -0.5em;
+    }
+  }
+
+  @if _normalize-include(embedded) {
+    /* Embedded content
+       ========================================================================== */
+
+    /**
+     * Add the correct display in IE 9-.
+     */
+
+    audio,
+    video {
+      display: inline-block;
+    }
+
+    /**
+     * Add the correct display in iOS 4-7.
+     */
+
+    audio:not([controls]) {
+      display: none;
+      height: 0;
+    }
+
+    /**
+     * Remove the border on images inside links in IE 10-.
+     */
+
+    img {
+      border-style: none;
+    }
+
+    /**
+     * Hide the overflow in IE.
+     */
+
+    svg:not(:root) {
+      overflow: hidden;
+    }
+  }
+
+  @if _normalize-include(forms) {
+    /* Forms
+       ========================================================================== */
+
+    /**
+     * 1. Change the font styles in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     */
+
+    button,
+    input,
+    optgroup,
+    select,
+    textarea {
+      font-family: $base-font-family; /* 1 */
+      font-size: 100%; /* 1 */
+      @if $normalize-vertical-rhythm {
+        line-height: ($base-line-height / $base-font-size) * 1em; /* 1 */
+      }
+      @else {
+        line-height: 1.15; /* 1 */
+      }
+      margin: 0; /* 2 */
+    }
+
+    /**
+     * Show the overflow in IE.
+     */
+
+    button {
+      overflow: visible;
+    }
+
+    /**
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
+     */
+
+    button,
+    select { /* 1 */
+      text-transform: none;
+    }
+
+    /**
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
+     */
+
+    button,
+    html [type="button"], /* 1 */
+    [type="reset"],
+    [type="submit"] {
+      -webkit-appearance: button; /* 2 */
+    }
+
+    button,
+    [type="button"],
+    [type="reset"],
+    [type="submit"] {
+
+      /**
+       * Remove the inner border and padding in Firefox.
+       */
+
+      &::-moz-focus-inner {
+        border-style: none;
+        padding: 0;
+      }
+
+      /**
+       * Restore the focus styles unset by the previous rule.
+       */
+
+      &:-moz-focusring {
+        outline: 1px dotted ButtonText;
+      }
+    }
+
+    /**
+     * Show the overflow in Edge.
+     */
+
+    input {
+      overflow: visible;
+    }
+
+    /**
+     * 1. Add the correct box sizing in IE 10-.
+     * 2. Remove the padding in IE 10-.
+     */
+
+    [type="checkbox"],
+    [type="radio"] {
+      box-sizing: border-box; /* 1 */
+      padding: 0; /* 2 */
+    }
+
+    /**
+     * Correct the cursor style of increment and decrement buttons in Chrome.
+     */
+
+    [type="number"]::-webkit-inner-spin-button,
+    [type="number"]::-webkit-outer-spin-button {
+      height: auto;
+    }
+
+    /**
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
+     */
+
+    [type="search"] {
+      -webkit-appearance: textfield; /* 1 */
+      outline-offset: -2px; /* 2 */
+
+      /**
+       * Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
+       */
+
+      &::-webkit-search-cancel-button,
+      &::-webkit-search-decoration {
+        -webkit-appearance: none;
+      }
+    }
+
+    /**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+
+    ::-webkit-file-upload-button {
+      -webkit-appearance: button; /* 1 */
+      font: inherit; /* 2 */
+    }
+
+    /**
+     * Change the border, margin, and padding in all browsers (opinionated).
+     */
+
+    fieldset {
+      border: 1px solid #c0c0c0;
+      margin: 0 2px;
+      padding: 0.35em 0.625em 0.75em;
+    }
+
+    /**
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     */
+
+    legend {
+      box-sizing: border-box; /* 1 */
+      display: table; /* 1 */
+      max-width: 100%; /* 1 */
+      padding: 0; /* 3 */
+      color: inherit; /* 2 */
+      white-space: normal; /* 1 */
+    }
+
+    /**
+     * 1. Add the correct display in IE 9-.
+     * 2. Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+
+    progress {
+      display: inline-block; /* 1 */
+      vertical-align: baseline; /* 2 */
+    }
+
+    /**
+     * Remove the default vertical scrollbar in IE.
+     */
+
+    textarea {
+      overflow: auto;
+    }
+  }
+
+  @if _normalize-include(interactive) {
+    /* Interactive
+       ========================================================================== */
+
+    /*
+     * Add the correct display in Edge, IE, and Firefox.
+     */
+
+    details {
+      display: block;
+    }
+
+    /*
+     * Add the correct display in all browsers.
+     */
+
+    summary {
+      display: list-item;
+    }
+
+    /*
+     * Add the correct display in IE 9-.
+     */
+
+    menu {
+      display: block;
+
+      @if $normalize-vertical-rhythm {
+        /*
+         * 1. Set 1 unit of vertical rhythm on the top and bottom margin.
+         * 2. Set consistent space for the list style image.
+         */
+
+        @include normalize-margin(1 0); /* 1 */
+        padding: 0 0 0 $indent-amount; /* 2 */
+
+        /**
+         * Turn off margins on nested lists.
+         */
+
+        menu &,
+        ol &,
+        ul & {
+          margin: 0;
+        }
+      }
+    }
+  }
+
+  @if _normalize-include(scripting) {
+    /* Scripting
+       ========================================================================== */
+
+    /**
+     * Add the correct display in IE 9-.
+     */
+
+    canvas {
+      display: inline-block;
+    }
+
+    /**
+     * Add the correct display in IE.
+     */
+
+    template {
+      display: none;
+    }
+  }
+
+  @if _normalize-include(hidden) {
+    /* Hidden
+       ========================================================================== */
+
+    /**
+     * Add the correct display in IE 10-.
+     */
+
+    [hidden] {
+      display: none;
+    }
+  }
+}

libraries/foundation-6/_vendor/normalize-scss/sass/normalize/_variables.scss

+//
+// Variables
+//
+// You can override the default values by setting the variables in your Sass
+// before importing the normalize-scss library.
+
+// The font size set on the root html element.
+$base-font-size: 16px !default;
+
+// The base line height determines the basic unit of vertical rhythm.
+$base-line-height: 24px !default;
+
+// The length unit in which to output vertical rhythm values.
+// Supported values: px, em, rem.
+$base-unit: 'em' !default;
+
+// The default font family.
+$base-font-family: sans-serif !default;
+
+// The font sizes for h1-h6.
+$h1-font-size: 2    * $base-font-size !default;
+$h2-font-size: 1.5  * $base-font-size !default;
+$h3-font-size: 1.17 * $base-font-size !default;
+$h4-font-size: 1    * $base-font-size !default;
+$h5-font-size: 0.83 * $base-font-size !default;
+$h6-font-size: 0.67 * $base-font-size !default;
+
+// The amount lists and blockquotes are indented.
+$indent-amount: 40px !default;
+
+// The following variable controls whether normalize-scss will output
+// font-sizes, line-heights and block-level top/bottom margins that form a basic
+// vertical rhythm on the page, which differs from the original Normalize.css.
+// However, changing any of the variables above will cause
+// $normalize-vertical-rhythm to be automatically set to true.
+$normalize-vertical-rhythm: false !default;

libraries/foundation-6/_vendor/normalize-scss/sass/normalize/_vertical-rhythm.scss

+//
+// Vertical Rhythm
+//
+// This is the minimal amount of code needed to create vertical rhythm in our
+// CSS. If you are looking for a robust solution, look at the excellent Typey
+// library. @see https://github.com/jptaranto/typey
+
+@function normalize-rhythm($value, $relative-to: $base-font-size, $unit: $base-unit) {
+  @if unit($value) != px {
+    @error "The normalize vertical-rhythm module only supports px inputs. The typey library is better.";
+  }
+  @if $unit == rem {
+    @return ($value / $base-font-size) * 1rem;
+  }
+  @else if $unit == em {
+    @return ($value / $relative-to) * 1em;
+  }
+  @else { // $unit == px
+    @return $value;
+  }
+}
+
+@mixin normalize-font-size($value, $relative-to: $base-font-size) {
+  @if unit($value) != 'px' {
+    @error "normalize-font-size() only supports px inputs. The typey library is better.";
+  }
+  font-size: normalize-rhythm($value, $relative-to);
+}
+
+@mixin normalize-rhythm($property, $values, $relative-to: $base-font-size) {
+  $value-list: $values;
+  $sep: space;
+  @if type-of($values) == 'list' {
+    $sep: list-separator($values);
+  }
+  @else {
+    $value-list: append((), $values);
+  }
+
+  $normalized-values: ();
+  @each $value in $value-list {
+    @if unitless($value) and $value != 0 {
+      $value: $value * normalize-rhythm($base-line-height, $relative-to);
+    }
+    $normalized-values: append($normalized-values, $value, $sep);
+  }
+  #{$property}: $normalized-values;
+}
+
+@mixin normalize-margin($values, $relative-to: $base-font-size) {
+  @include normalize-rhythm(margin, $values, $relative-to);
+}
+
+@mixin normalize-line-height($font-size, $min-line-padding: 2px) {
+  $lines: ceil($font-size / $base-line-height);
+  // If lines are cramped include some extra leading.
+  @if ($lines * $base-line-height - $font-size) < ($min-line-padding * 2) {
+    $lines: $lines + 1;
+  }
+  @include normalize-rhythm(line-height, $lines, $font-size);
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/functions/_purge.scss

+/// Removes all false and null values from `$list`.
+///
+/// @ignore Documentation: http://at-import.github.io/SassyLists/documentation/#function-sl-purge
+///
+/// @requires sl-is-true
+/// @requires sl-to-list
+///
+/// @param {List} $list - list to purge
+///
+/// @example
+/// sl-purge(null a false b)
+/// // a b
+///
+/// @return {List}
+///
+
+@function sl-purge($list) {
+  $_: sl-missing-dependencies('sl-is-true', 'sl-to-list');
+  
+  $result: ();
+
+  @each $item in $list {
+    @if sl-is-true($item) {
+      $result: append($result, $item, list-separator($list));
+    }
+  }
+
+  @return sl-to-list($result);
+}
+
+///
+/// @requires sl-purge
+/// @alias sl-purge
+///
+ 
+@function sl-clean($list) {
+  @return sl-purge($list);
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/functions/_remove.scss

+///
+/// Removes value(s) `$value` from `$list`.
+///
+/// @ignore Documentation: http://at-import.github.io/SassyLists/documentation/#function-sl-remove
+///
+/// @requires sl-replace
+///
+/// @param {List}    $list      - list to update
+/// @param {*}       $value     - value to remove
+///
+/// @example
+/// sl-remove(a b c, a)
+/// // b c
+///
+/// @return {List}
+///
+
+@function sl-remove($list, $value) {
+  $_: sl-missing-dependencies('sl-replace');
+
+  @return sl-replace($list, $value, null);
+}
+
+///
+/// @requires sl-remove
+/// @alias sl-remove
+///
+
+@function sl-without($list, $value) {
+  @return sl-remove($list, $value);
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/functions/_replace.scss

+///
+/// Replaces `$old` by `$new` in `$list`.
+///
+/// @ignore Documentation: http://at-import.github.io/SassyLists/documentation/#function-sl-replace
+///
+/// @requires sl-is-true
+/// @requires sl-purge
+/// @requires sl-to-list
+///
+/// @param {List}    $list  - list to update
+/// @param {*}       $old   - value to replace
+/// @param {*}       $value - new value for $old
+///
+/// @example
+/// sl-replace(a b c, b, z)
+/// // a z c
+///
+/// @example
+/// sl-replace(a b c, y, z)
+/// // a b c
+/// 
+/// @return {List}
+///
+ 
+@function sl-replace($list, $old, $value) {
+  $_: sl-missing-dependencies('sl-is-true', 'sl-purge', 'sl-to-list');
+
+  $running: true;
+
+  @while $running {
+    $index: index($list, $old);
+
+    @if not $index {
+      $running: false;
+    }
+
+    @else {
+      $list: set-nth($list, $index, $value);
+    }
+
+  }
+
+  $list: if(sl-is-true($value), $list, sl-purge($list));
+  
+  @return sl-to-list($list);
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/functions/_to-list.scss

+///
+/// Casts `$value` into a list.
+///
+/// @ignore Documentation: http://at-import.github.io/SassyLists/documentation/#function-sl-to-list
+///
+/// @param {*} $value - value to cast to list
+/// @param {String} $separator [space] - separator to use
+///
+/// @example
+/// sl-to-list(a b c, comma)
+/// // a, b, c
+/// 
+/// @return {List}
+///
+
+@function sl-to-list($value, $separator: list-separator($value)) {
+  @return join((), $value, $separator);
+}
+
+///
+/// @requires sl-to-list
+/// @alias sl-to-list
+///
+
+@function sl-listify($value) {
+  @return sl-to-list($value);
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/helpers/_missing-dependencies.scss

+///
+/// Checks whether `$functions` exist in global scope.
+///
+/// @access private
+///
+/// @param {ArgList} $functions - list of functions to check for
+///
+/// @return {Bool} Whether or not there are missing dependencies
+///
+ 
+@function sl-missing-dependencies($functions...) {
+  $missing-dependencies: ();
+  
+  @each $function in $functions {
+    @if not function-exists($function) {
+      $missing-dependencies: append($missing-dependencies, $function, comma);
+    }
+  }
+  
+  @if length($missing-dependencies) > 0 {
+    @error 'Unmet dependencies! The following functions are required: #{$missing-dependencies}.';
+  }
+
+  @return length($missing-dependencies) > 0;
+}

libraries/foundation-6/_vendor/sassy-lists/stylesheets/helpers/_true.scss

+///
+/// Returns truthiness of `$value`.
+///
+/// @access private
+///
+/// @param {*} $value - value to check
+///
+/// @return {Bool}
+///
+ 
+@function sl-is-true($value) {
+  @return if($value == null, false, $value and $value != null and $value != '' and $value != ());
+}