#13923: Add @gray-base variable to make @gray-* variables work better together.
#14440: Remove unused @nav-open-link-hover-color variable.
#14511: Add missing border-radius variables for small and large inputs.
#14592: Add @progress-border-radius variable for progress bar.
#14786: Add @link-hover-decoration variable.
#14891: Add @cursor-disabled variable.

Code

#14168: Make nested kbd elements bold so you can better identify combinators.

Type

#13967: Don't reset the <cite> element's font-style.
#14682: Remove the content: ""; reset on <blockquote> elements as it can cause rendering bugs.

Images

#13996: Revert the IE backslash hack for .img-responsive on SVG images from #10073 as it stretches all image types unnecessarily in IE<11.

Tables

#13202: Always use overflow: auto; on .table-responsive to prevent content breaking out of containers.
#13920: Assign background-color to <tr> elements instead of <th>/<td> within the .table-striped to avoid broken backgrounds on responsive tables.
#14095: Add basic styling for <caption>s.
#14251: Remove the -webkit-overflow-scrolling on .table-responsive to prevent Safari from screwing up <body> width.
#14838: Fix IE9 bug when .table-responsive is used with .table-hover

Forms

#12669 (again): Redeclare the line-heights on date inputs in IE8+ to avoid cut off content.
#13989: Don't extend the input sizes in small and large form groups. Instead, manually chain the selectors.
#13997: Move min-height for radio/checkbox to their inner <label> given move from float to position: absolute; in v3.2.0.
#14005: Only adjust the .has-feedback icons when needed.
#14104: Remove pointer events on feedback icons.
#14107: Lighten placeholder text back to #999.
#14221: Make .form-control-static work in inline forms as well.
#14234: Reset the IE8-10 temporal input line-height bug with another hack just for IE11.

Buttons

#14029: Add touch-action: manipulation to buttons to remove the 300ms delay in IE10+.
#14030: Remove superfluous cursor: pointer; on .btn-link since we already set it on .btn.
#14310: Remove the box-shadow on .btn-link.active to match the existing :active override.

Button groups

#14053: Don't show radio/checkbox in justified button groups.
#14559: Properly hide checkbox and radio inputs in button groups.

Thumbnails

#14443: Only transition what needs transitioning for thumbnails to avoid Safari/Chrome render bug.

Navbar

#12738: Using landscape orientation media query for setting max-height on the .navbar-collapse content requires use of max-device-width, not max-width.
#13325, #13464: Changed :last-child overrides in navbars to :first-child to prevent elements from overriding one another.
#13943: Lighten the navbar inverse link and text color more since our text contrast change in v3.2.0.
#14051: Improve margins on .navbar-right to further fix #13325 and #13464.
#14557: Remove the margin-bottom on .form-group:last-child in xs .navbar-form.
#14667: Remove translate3d from .navbar and switch to translate to prevent iOS dropdown rendering bugs and make the CSS more predictable.

Jumbotron

#14337: Round .jumbotron corners within .container and .container-fluid.
#14563: Prevent jumbotron reflow by changing the padding of .jumbotron so it doesn't interfere with the .container side padding.

List groups

#13931: Set not-allowed cursor on disabled .list-group-items.
#14711: Account for list groups in collapsing panels—just replace the .panel-body with a .list-group.

Progress bars

#13953, #14736: Remove the progress bar min-width styles for low percentages to avoid jumping progress.

Media object

#14801: Add vertical alignment of image in media component. Also deprecated the use of .pull-left and .pull-right in .media. They are replaced by the new .media-left and .media-right classes.

Panels

#14142: Adding horizontal padding to captions in .tables in panels.
#14253: Add borders for tables that follow panel bodies.
#14329: Fix alignment, spacing, and borders for list groups nested within collapsing panels.
#14437: Round the corners of table rows in panels as well as the cells.

Responsive embed

#14687: Include <video> element support in responsive embed.

Popovers

#14386: Reset font, text, and line-height properties in popovers. Moves the font-weight and line-height resets from .popover-title to the .popover, and adds font-size.
#14465: Make @popover-arrow-color variable use the @popover-bg variable instead of regular #fff.

Affix

#13974, #14123: Remove translate3d repaint performance enhancement for text rendering and position wonkiness.
#14363: Make affix accept 0 as offsetTop or offsetBottom

Carousel

#13074: Add WebKit CSS3 carousel transforms for supported devices.

Theme

#14074: Make open dropdown nav links in navbars use gradients to match active links.
#14814: Use @navbar-*-link-active-bg variables in background gradients on active/open navbar items.
#14806: Reset the text-shadow on badges in the themed buttons.

Glyphicons

#14869: Added .glyphicon-eur alias for .glyphicon-euro.

Print

#14452: Update print.less from its H5BP source to consolidate styles and update source URL.
#14790: Update to the latest H5BP.

Dependencies

#14743: Updated normalize.css to v3.0.2.

JS

#12815: Make zero-value offsets work on affix plugin via data attributes.
#13814, #13815: Allow tabs to fade in if there are no initially active panes present.
#13853: Major unit tests cleanup.
#13907: Add .focus to focused radio and checkbox buttons with the button plugin.
#13998: Namespace the affixed event
#14000: When a modal is open, pressing the Esc key to close a native browser dialog or menu no longer also closes the modal
#14015: Fix positioning of tooltips on SVG elements
#14034: Deprecated the remote option of modals
#14069: Carousel now skip over non-items when its next or prev methods are called
#14090, #14091: Fix IE8 JS unit test problems
#14244: Remove popover content with .children().detach() instead of .empty().
#14273: Fix hover-triggered popover/tooltip flickering when mouse re-enters trigger element.
#14282: Already visible collapse content no longer closes when .collapse('show') is called.
#14316: Use closest .alert for alert dismissal.
#14357: Recalculate scrollbar width for modal every time in case user resizes the window.
#13928: Ensure that hidden event is sent when content is really hidden (collapsing class is removed).
#14573: Make inDom check of tooltip cross document compatible.
#14492: Handle lack of .width and .height from getBoundingClientRect() in IE8.
#14353: Collapse: count .collapsing elements as actives.
#14571: Properly fire hidden event when tooltip is destroyed.
#13718: Correctly selects arrow placement for a tooltip.
#14610: Remove unused (and undocumented) Tooltip#validate method.
#14581: Fix tooltip misplacement with "auto top".
#14570: Remove .modal-open class after backdrop is hidden.
#14599: Tooltip: Rely on getBoundingClientRect for width and height.
#14623: Use container instead of parent for tooltip/popover auto-placement calculations.
#14626: Carousel: Only enable pause: hover for non-touch browsers.
#14722: Escape key should only close Dropdown.
#14723: Use translate instead of translate3d on modals to fix bug where sometimes modal wouldn't reappear in Safari.
#14590: Add keyboard option to carousel.
#14724: Modal no longer closes when dragging and releasing the mouse button outside the dialog.
#14845: Collapse: Don't fire show event if show is prevented because other element is transitioning.
#14767: Fixes tooltip misplacements in scrollable viewports with auto positioning.
#14772: Implement hide and hidden events for tabs.
#14852: Bump minimum required jQuery version to 1.9.1 and throw an error when Bootstrap's JS is used with outdated versions of jQuery.
#13563: Clear scrollspy selection above first section.
#14189: Handle multiple delegated selectors on tooltip and popover nodes.
#14519: Fix tooltip occasionally not hiding when using a hide delay.
#14457: Change value of stateful button after event loop.
#14686: Handle collapsed class on triggers even when manually invoked.
#14463: Independently delegate data-api selectors.

Accessibility

#14070: Add role="tablist" to .nav-pills in examples to improve accessibility.
#14071: Add role="listbox" to .carousel-inner to improve accessibility of Carousels.
#14072: Add screenreader text to previous/next carousel buttons in examples to improve accessibility.
#14085: Add role="presentation" to tab <li>s to improve accessibility.
#14086: Add role="tabpanel" to .tab-pane <div>s to improve accessibility.
#14088: Add role="tabpanel" to .panel-collapse to improve accessibility.
#14089: Add role="tablist" & aria-multiselectable="true" to accordion .panel-group.
#14208: Add ARIA attributes to dropdown plugin.
#14242: Remove aria-describedby attribute from tootips later
#14147: ARIA / screenreader support for collapse
#14577: Wrap .pagination & .pager in <nav> so that AT can know they're for navigation
#14578: add aria-labelledby to accordion example to improve accessibility
#14579: add role="tab" to .panel-headings in accordion example to improve accessibility
#14673: Add visibility styles to navbar and component animations (fade and collapse) for more screenreader friendly components.
#14841: Add role="button" to a couple more non-link <a> buttons
#14819: Add aria-pressed to single toggle buttons.
#14154: Add aria-expanded toggling to tabs plugin. Also adds aria-labelledBy, aria-controls, and aria-expanded to the tabs docs.

Docs

Moved from Pygments to Rouge for syntax highlighting in the docs. (For folks developing the docs locally, be sure to run gem install rouge before building.)
#13746: Add docs section for swapping .navbar-brand for an image.
#13835: More explicitly document mobile dropdown menu dismissing behavior.
#13937: Fix broken live demos for popovers.
#13940, #13954: Save "Preview theme" state with local storage.
#13942: Fix link to Less compilation section of docs.
#13968: Add missing input group code to inline form example.
#13986: Use valid JSON in compound option value examples in tooltip & popover docs so that they can be safely copy-pasted for data-api usage too.
#14011: Document radio and checkbox validation states.
#14021: Add .collapsed default class to .navbar-collapse for consistency.
#14036: Have Jekyll use non-minified assets for local, non-hosted docs, for easier testing/debugging.
#14037: Add new Wall of Browser Bugs entry for Chrome regarding input[type="password"] and width of floated elements.
#14047: Add missing example code code for kbd after #13351.
#14111: Update JS Bin template in CONTRIBUTING.md.
#14116: Use <button> elements over empty <a>s in dropdown docs.
#14143: Add note about JS plugins and users who have JavaScript disabled.
#14156: Fix dismiss-on-next-click popover example.
#14192: Use HTTPS for CDN URLs.
#14203: Document that form field feedback icons only work with <input class="form-control">.
#14211: Add new Wall of Browser Bugs entry for IE regarding :hover and scrolling.
#14256: Correctly document arguments passed to title & content options of tooltips & popovers when the option values are functions.
#14257: Document that empty tooltips & popovers do not get displayed.
#14258: Move Windows Phone 8 IE10 viewport bug workaround script from <head> to end of <body>.
#14264: Document arguments passed to placement function option of tooltip/popover.
#14332: Clarify that closing an Alert removes it from the DOM.
#14406: Consistently use <nav> instead of <div> for .navbar in the docs.
#14439: Add static tooltip example to docs.
#14451: Bootstrap's IRC channel is now named ##bootstrap.
#14516: Document that fieldset[disabled] is somewhat broken in IE11.
#14527: Add Wall of Browser Bugs entry for #793.
#14531: Add Wall of Browser Bugs entry for IE11 <select> cursor bug.
#14709: Add default .collapsed class to accordion examples.
#14745: Use https for Twitter links.
#14858: Document .alert-dismissible .close button usage restrictions
#14901: Add Wall of Browser Bugs entry for iOS Safari transform: translate3d(0, 0, 0) bug

Examples

#13964: Fix markup of "Remember me" checkbox in Sign In example for accurate horizontal alignment.
#14500: Replace nonexistent .col-6 classes in offcanvas example with .col-xs-6.

Build tools / Packaging

#14050: Ensure that Bower installs include useful dotfiles (.jshintrc, .csscomb.json, etc.)
#14290: Fix watch task to also watch files in subdirectories of /less/.
#14336: Have watch task regenerate bootstrap.js when JS source files are modified.
#14394: Adjust Gruntfile so that grunt dist works when Bootstrap has been downloaded via Bower.
#14488: Simplify copy task.
#14497: Set Travis's git clone depth to 10 to make it faster.
#14852: Bump required minimum jQuery version to 1.9.1 in bower.json
#13824: Added dist/js/npm.js so the npm module can be properly required.

Customizer

#13790: Add feature to import customization config.json files via drag-and-drop.
#14411: Fix Gist creation API call.