Update to Bootstrap 4.1.3

package.json

@@ -27,7 +27,7 @@
   },
   "homepage": "https://understrap.com",
   "dependencies": {
-    "bootstrap": "4.1.2",
+    "bootstrap": "4.1.3",
     "browser-sync": "^2.23.6",
     "del": "^3.0.0",
     "font-awesome": "^4.7.0",
@@ -41,13 +41,13 @@
     "gulp-merge": "^0.1.1",
     "gulp-plumber": "^1.2.0",
     "gulp-rename": "^1.2.2",
-    "gulp-replace": "^0.6.1",
+    "gulp-replace": "1.0.0",
     "gulp-rimraf": "^0.2.2",
     "gulp-sass": "4.0.1",
     "gulp-sequence": "1.0.0",
     "gulp-sourcemaps": "2.6.4",
     "gulp-uglify": "^3.0.0",
-    "gulp-watch": "5.0.0",
+    "gulp-watch": "5.0.1",
     "merge2": "^1.2.1",
     "popper.js": "^1.12.9",
     "run-sequence": "^2.2.1",

src/js/bootstrap4/bootstrap.bundle.js

@@ -1,5 +1,5 @@
 /*!
-  * Bootstrap v4.1.2 (https://getbootstrap.com/)
+  * Bootstrap v4.1.3 (https://getbootstrap.com/)
   * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   */
@@ -69,7 +69,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): util.js
+   * Bootstrap (v4.1.3): util.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -201,7 +201,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): alert.js
+   * Bootstrap (v4.1.3): alert.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -213,7 +213,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'alert';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.alert';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -376,7 +376,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): button.js
+   * Bootstrap (v4.1.3): button.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -388,7 +388,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'button';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.button';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -540,7 +540,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): carousel.js
+   * Bootstrap (v4.1.3): carousel.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -552,7 +552,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'carousel';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.carousel';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -1044,7 +1044,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): collapse.js
+   * Bootstrap (v4.1.3): collapse.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -1056,7 +1056,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'collapse';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.collapse';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -3930,7 +3930,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): dropdown.js
+   * Bootstrap (v4.1.3): dropdown.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -3942,7 +3942,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'dropdown';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.dropdown';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -4418,7 +4418,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): modal.js
+   * Bootstrap (v4.1.3): modal.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -4430,7 +4430,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'modal';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.modal';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -4989,7 +4989,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): tooltip.js
+   * Bootstrap (v4.1.3): tooltip.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -5001,7 +5001,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'tooltip';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.tooltip';
     var EVENT_KEY = "." + DATA_KEY;
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
@@ -5659,7 +5659,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): popover.js
+   * Bootstrap (v4.1.3): popover.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -5671,7 +5671,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'popover';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.popover';
     var EVENT_KEY = "." + DATA_KEY;
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
@@ -5856,7 +5856,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): scrollspy.js
+   * Bootstrap (v4.1.3): scrollspy.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -5868,7 +5868,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'scrollspy';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.scrollspy';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -6172,7 +6172,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): tab.js
+   * Bootstrap (v4.1.3): tab.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -6184,7 +6184,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'tab';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.tab';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -6421,7 +6421,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): index.js
+   * Bootstrap (v4.1.3): index.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */

src/js/bootstrap4/bootstrap.js

@@ -1,5 +1,5 @@
 /*!
-  * Bootstrap v4.1.2 (https://getbootstrap.com/)
+  * Bootstrap v4.1.3 (https://getbootstrap.com/)
   * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   */
@@ -70,7 +70,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): util.js
+   * Bootstrap (v4.1.3): util.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -202,7 +202,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): alert.js
+   * Bootstrap (v4.1.3): alert.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -214,7 +214,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'alert';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.alert';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -377,7 +377,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): button.js
+   * Bootstrap (v4.1.3): button.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -389,7 +389,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'button';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.button';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -541,7 +541,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): carousel.js
+   * Bootstrap (v4.1.3): carousel.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -553,7 +553,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'carousel';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.carousel';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -1045,7 +1045,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): collapse.js
+   * Bootstrap (v4.1.3): collapse.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -1057,7 +1057,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'collapse';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.collapse';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -1413,7 +1413,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): dropdown.js
+   * Bootstrap (v4.1.3): dropdown.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -1425,7 +1425,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'dropdown';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.dropdown';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -1901,7 +1901,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): modal.js
+   * Bootstrap (v4.1.3): modal.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -1913,7 +1913,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'modal';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.modal';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -2472,7 +2472,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): tooltip.js
+   * Bootstrap (v4.1.3): tooltip.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -2484,7 +2484,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'tooltip';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.tooltip';
     var EVENT_KEY = "." + DATA_KEY;
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
@@ -3142,7 +3142,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): popover.js
+   * Bootstrap (v4.1.3): popover.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -3154,7 +3154,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'popover';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.popover';
     var EVENT_KEY = "." + DATA_KEY;
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
@@ -3339,7 +3339,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): scrollspy.js
+   * Bootstrap (v4.1.3): scrollspy.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -3351,7 +3351,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'scrollspy';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.scrollspy';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -3655,7 +3655,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): tab.js
+   * Bootstrap (v4.1.3): tab.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
@@ -3667,7 +3667,7 @@
      * ------------------------------------------------------------------------
      */
     var NAME = 'tab';
-    var VERSION = '4.1.2';
+    var VERSION = '4.1.3';
     var DATA_KEY = 'bs.tab';
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
@@ -3904,7 +3904,7 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.2): index.js
+   * Bootstrap (v4.1.3): index.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */

src/sass/bootstrap4/_buttons.scss

@@ -40,7 +40,6 @@
 
   &:not(:disabled):not(.disabled):active,
   &:not(:disabled):not(.disabled).active {
-    background-image: none;
     @include box-shadow($btn-active-box-shadow);
 
     &:focus {

src/sass/bootstrap4/_custom-forms.scss

@@ -10,7 +10,7 @@
 .custom-control {
   position: relative;
   display: block;
-  min-height: (1rem * $line-height-base);
+  min-height: ($font-size-base * $line-height-base);
   padding-left: $custom-control-gutter;
 }
 
@@ -63,7 +63,7 @@
   // Background-color and (when enabled) gradient
   &::before {
     position: absolute;
-    top: (($line-height-base - $custom-control-indicator-size) / 2);
+    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
     left: -$custom-control-gutter;
     display: block;
     width: $custom-control-indicator-size;
@@ -78,7 +78,7 @@
   // Foreground (icon)
   &::after {
     position: absolute;
-    top: (($line-height-base - $custom-control-indicator-size) / 2);
+    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
     left: -$custom-control-gutter;
     display: block;
     width: $custom-control-indicator-size;
@@ -320,6 +320,12 @@
 
   &:focus {
     outline: none;
+
+    // Pseudo-elements must be split across multiple rulesets to have an affect.
+    // No box-shadow() mixin for focus accessibility.
+    &::-webkit-slider-thumb { box-shadow: $custom-range-thumb-focus-box-shadow; }
+    &::-moz-range-thumb     { box-shadow: $custom-range-thumb-focus-box-shadow; }
+    &::-ms-thumb            { box-shadow: $custom-range-thumb-focus-box-shadow; }
   }
 
   &::-moz-focus-outer {
@@ -329,7 +335,7 @@
   &::-webkit-slider-thumb {
     width: $custom-range-thumb-width;
     height: $custom-range-thumb-height;
-    margin-top: -($custom-range-thumb-width * .25); // Webkit specific?
+    margin-top: (($custom-range-track-height - $custom-range-thumb-height) / 2); // Webkit specific
     @include gradient-bg($custom-range-thumb-bg);
     border: $custom-range-thumb-border;
     @include border-radius($custom-range-thumb-border-radius);
@@ -337,11 +343,6 @@
     @include transition($custom-forms-transition);
     appearance: none;
 
-    &:focus {
-      outline: none;
-      box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
-    }
-
     &:active {
       @include gradient-bg($custom-range-thumb-active-bg);
     }
@@ -368,11 +369,6 @@
     @include transition($custom-forms-transition);
     appearance: none;
 
-    &:focus {
-      outline: none;
-      box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
-    }
-
     &:active {
       @include gradient-bg($custom-range-thumb-active-bg);
     }
@@ -392,6 +388,9 @@
   &::-ms-thumb {
     width: $custom-range-thumb-width;
     height: $custom-range-thumb-height;
+    margin-top: 0; // Edge specific
+    margin-right: $custom-range-thumb-focus-box-shadow-width; // Workaround that overflowed box-shadow is hidden.
+    margin-left: $custom-range-thumb-focus-box-shadow-width;  // Workaround that overflowed box-shadow is hidden.
     @include gradient-bg($custom-range-thumb-bg);
     border: $custom-range-thumb-border;
     @include border-radius($custom-range-thumb-border-radius);
@@ -399,11 +398,6 @@
     @include transition($custom-forms-transition);
     appearance: none;
 
-    &:focus {
-      outline: none;
-      box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
-    }
-
     &:active {
       @include gradient-bg($custom-range-thumb-active-bg);
     }

src/sass/bootstrap4/_forms.scss

@@ -7,6 +7,7 @@
 .form-control {
   display: block;
   width: 100%;
+  height: $input-height;
   padding: $input-padding-y $input-padding-x;
   font-size: $font-size-base;
   line-height: $input-line-height;
@@ -57,10 +58,6 @@
 }
 
 select.form-control {
-  &:not([size]):not([multiple]) {
-    height: $input-height;
-  }
-
   &:focus::-ms-value {
     // Suppress the nested default white text on blue background highlight given to
     // the selected option text when the (still closed) <select> receives focus
@@ -139,35 +136,36 @@ select.form-control {
 // Build on `.form-control` with modifier classes to decrease or increase the
 // height and font-size of form controls.
 //
-// The `.form-group-* form-control` variations are sadly duplicated to avoid the
+// Repeated in `_input_group.scss` to avoid Sass extend issues.
-// issue documented in https://github.com/twbs/bootstrap/issues/15074.
 
 .form-control-sm {
+  height: $input-height-sm;
   padding: $input-padding-y-sm $input-padding-x-sm;
   font-size: $font-size-sm;
   line-height: $input-line-height-sm;
   @include border-radius($input-border-radius-sm);
 }
 
-select.form-control-sm {
-  &:not([size]):not([multiple]) {
-    height: $input-height-sm;
-  }
-}
-
 .form-control-lg {
+  height: $input-height-lg;
   padding: $input-padding-y-lg $input-padding-x-lg;
   font-size: $font-size-lg;
   line-height: $input-line-height-lg;
   @include border-radius($input-border-radius-lg);
 }
 
-select.form-control-lg {
+// stylelint-disable no-duplicate-selectors
-  &:not([size]):not([multiple]) {
+select.form-control {
-    height: $input-height-lg;
+  &[size],
+  &[multiple] {
+    height: auto;
   }
 }
 
+textarea.form-control {
+  height: auto;
+}
+// stylelint-enable no-duplicate-selectors
 
 // Form groups
 //

src/sass/bootstrap4/_input-group.scss

@@ -35,6 +35,11 @@
     z-index: 3;
   }
 
+  // Bring the custom file input above the label
+  > .custom-file .custom-file-input:focus {
+    z-index: 4;
+  }
+
   > .form-control,
   > .custom-select {
     &:not(:last-child) { @include border-right-radius(0); }
@@ -122,7 +127,11 @@
 .input-group-lg > .input-group-append > .input-group-text,
 .input-group-lg > .input-group-prepend > .btn,
 .input-group-lg > .input-group-append > .btn {
-  @extend .form-control-lg;
+  height: $input-height-lg;
+  padding: $input-padding-y-lg $input-padding-x-lg;
+  font-size: $font-size-lg;
+  line-height: $input-line-height-lg;
+  @include border-radius($input-border-radius-lg);
 }
 
 .input-group-sm > .form-control,
@@ -130,7 +139,11 @@
 .input-group-sm > .input-group-append > .input-group-text,
 .input-group-sm > .input-group-prepend > .btn,
 .input-group-sm > .input-group-append > .btn {
-  @extend .form-control-sm;
+  height: $input-height-sm;
+  padding: $input-padding-y-sm $input-padding-x-sm;
+  font-size: $font-size-sm;
+  line-height: $input-line-height-sm;
+  @include border-radius($input-border-radius-sm);
 }
 
 

src/sass/bootstrap4/_modal.scss

@@ -4,9 +4,14 @@
 // .modal-content   - actual modal w/ bg and corners and stuff
 
 
-// Kill the scroll on the body
 .modal-open {
+  // Kill the scroll on the body
   overflow: hidden;
+
+  .modal {
+    overflow-x: hidden;
+    overflow-y: auto;
+  }
 }
 
 // Container that the modal scrolls within
@@ -25,11 +30,6 @@
   // We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
   // gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
   // See also https://github.com/twbs/bootstrap/issues/17695
-
-  .modal-open & {
-    overflow-x: hidden;
-    overflow-y: auto;
-  }
 }
 
 // Shell div to position the modal with bottom padding
@@ -54,6 +54,13 @@
   display: flex;
   align-items: center;
   min-height: calc(100% - (#{$modal-dialog-margin} * 2));
+
+  // Ensure `modal-dialog-centered` extends the full height of the view (IE10/11)
+  &::before {
+    display: block; // IE10
+    height: calc(100vh - (#{$modal-dialog-margin} * 2));
+    content: "";
+  }
 }
 
 // Actual modal
@@ -153,6 +160,11 @@
 
   .modal-dialog-centered {
     min-height: calc(100% - (#{$modal-dialog-margin-y-sm-up} * 2));
+
+    &::before {
+      height: calc(100vh - (#{$modal-dialog-margin-y-sm-up} * 2));
+    }
+
   }
 
   .modal-content {

src/sass/bootstrap4/_reboot.scss

@@ -272,8 +272,10 @@ img {
   border-style: none; // Remove the border on images inside links in IE 10-.
 }
 
-svg:not(:root) {
+svg {
-  overflow: hidden; // Hide the overflow in IE
+  // Workaround for the SVG overflow bug in IE10/11 is still required.
+  // See https://github.com/twbs/bootstrap/issues/26878
+  overflow: hidden;
   vertical-align: middle;
 }
 

src/sass/bootstrap4/_tables.scss

@@ -4,7 +4,6 @@
 
 .table {
   width: 100%;
-  max-width: 100%;
   margin-bottom: $spacer;
   background-color: $table-bg; // Reset for nesting within parents with `background-color`.
 

src/sass/bootstrap4/_variables.scss

@@ -248,7 +248,7 @@ $transition-collapse:         height .35s ease !default;
 // Font, line-height, and color for body text, headings, and more.
 
 // stylelint-disable value-keyword-case
-$font-family-sans-serif:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
+$font-family-sans-serif:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !default;
 $font-family-monospace:       SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !default;
 $font-family-base:            $font-family-sans-serif !default;
 // stylelint-enable value-keyword-case
@@ -537,14 +537,15 @@ $custom-range-track-bg:             $gray-300 !default;
 $custom-range-track-border-radius:  1rem !default;
 $custom-range-track-box-shadow:     inset 0 .25rem .25rem rgba($black, .1) !default;
 
-$custom-range-thumb-width:            1rem !default;
+$custom-range-thumb-width:                   1rem !default;
-$custom-range-thumb-height:           $custom-range-thumb-width !default;
+$custom-range-thumb-height:                  $custom-range-thumb-width !default;
-$custom-range-thumb-bg:               $component-active-bg !default;
+$custom-range-thumb-bg:                      $component-active-bg !default;
-$custom-range-thumb-border:           0 !default;
+$custom-range-thumb-border:                  0 !default;
-$custom-range-thumb-border-radius:    1rem !default;
+$custom-range-thumb-border-radius:           1rem !default;
-$custom-range-thumb-box-shadow:       0 .1rem .25rem rgba($black, .1) !default;
+$custom-range-thumb-box-shadow:              0 .1rem .25rem rgba($black, .1) !default;
-$custom-range-thumb-focus-box-shadow: 0 0 0 1px $body-bg, $input-btn-focus-box-shadow !default;
+$custom-range-thumb-focus-box-shadow:        0 0 0 1px $body-bg, $input-btn-focus-box-shadow !default;
-$custom-range-thumb-active-bg:        lighten($component-active-bg, 35%) !default;
+$custom-range-thumb-focus-box-shadow-width:  $input-btn-focus-width !default; // For focus box shadow issue in IE/Edge
+$custom-range-thumb-active-bg:               lighten($component-active-bg, 35%) !default;
 
 $custom-file-height:                $input-height !default;
 $custom-file-height-inner:          $input-height-inner !default;

src/sass/bootstrap4/bootstrap-grid.scss

@@ -1,5 +1,5 @@
 /*!
- * Bootstrap Grid v4.1.2 (https://getbootstrap.com/)
+ * Bootstrap Grid v4.1.3 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors
  * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

src/sass/bootstrap4/bootstrap-reboot.scss

@@ -1,5 +1,5 @@
 /*!
- * Bootstrap Reboot v4.1.2 (https://getbootstrap.com/)
+ * Bootstrap Reboot v4.1.3 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors
  * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

src/sass/bootstrap4/bootstrap.scss

@@ -1,5 +1,5 @@
 /*!
- * Bootstrap v4.1.2 (https://getbootstrap.com/)
+ * Bootstrap v4.1.3 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors
  * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

src/sass/bootstrap4/mixins/_forms.scss

@@ -41,13 +41,13 @@
     z-index: 5;
     display: none;
     max-width: 100%; // Contain to parent when possible
-    padding: .5rem;
+    padding: $tooltip-padding-y $tooltip-padding-x;
     margin-top: .1rem;
-    font-size: .875rem;
+    font-size: $tooltip-font-size;
-    line-height: 1;
+    line-height: $line-height-base;
-    color: $white;
+    color: color-yiq($color);
-    background-color: rgba($color, .8);
+    background-color: rgba($color, $tooltip-opacity);
-    border-radius: .2rem;
+    @include border-radius($tooltip-border-radius);
   }
 
   .form-control,
@@ -129,7 +129,7 @@
       ~ .custom-file-label {
         border-color: $color;
 
-        &::before { border-color: inherit; }
+        &::after { border-color: inherit; }
       }
 
       ~ .#{$state}-feedback,

src/sass/bootstrap4/mixins/_navbar-align.scss

@@ -1,10 +0,0 @@
-// Navbar vertical align
-//
-// Vertically center elements in the navbar.
-// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);`
-// to calculate the appropriate top margin.
-
-// @mixin navbar-vertical-align($element-height) {
-//   margin-top: (($navbar-height - $element-height) / 2);
-//   margin-bottom: (($navbar-height - $element-height) / 2);
-// }