There are a few dozen bug fixes and changes in this release, but we've called out the ones we think matter most: - Padding of .navbar-collapse and alignment of .navbar-right:last-child elements has been reworked. - Added a max-width: 100%; to .containers. - Restored the twelfth column's float: left; at all grid tiers.

See the list below for more information on those changes and more.

Specific bug fixes and changes

#9927: Update non-responsive example to prevent .navbar-collapse border from increasing height and increase specificity of nav selectors to keep dropdowns looking the same.
#10147: Remove outline from carousel controls on focus.
#10353: Tell Bower to ignore development and documentation files.
#10483, #10357: Make .container mixin-friendly by moving the width declarations within one class.
#10662: Enable individually linked images within thumbnails.
#10744: Use border-style: solid; on .carets to undo a previous Firefox fix that appears to no longer work.
#10936: Increase height of large inputs to fix Firefox inconsistencies by using ceil() instead of floor().
#10941: Fix Glyphicons path for those importing bootstrap.less from another directory.
#10979: Don't use .img-thumbnail as a mixin for .thumbnail to avoid duplicate and unnecessary styles.
#11217: Fix vertical alignment of labels within buttons, just like badges in buttons.
#11268: Account for badges within buttons by matching background to text color and text color to background.
#11277: Drop the abbr element from the .initialism selector.
#11299: Support .h1 in jumbotrons.
#11351: Correct grid class reset on input groups by using attribute selector, not an old class from v3 betas.
#11357: Vertically center .btn-sm and .btn-xs variations of .navbar-btns in the navbar.
#11376: Don't deselect radio buttons when double clicking.
#11387: Improve nesting on table classes to enable easier use of mixins.
#11388: Simplify contextual table styles mixin (also drops the border parameter since we longer apply that anyway).
#11390: Add max-width: 100%; to containers within jumbotrons to avoid horizontal scrollbar.
#11402: Set width: auto; on select.form-control within .form-inline.
#11414: Add .small support to blockquote citations.
#11425: Use margin instead of padding on .modal-dialog to click-thru to .modal-backdrop.
#11432: Corrected color contrast to WCAG 2.0 AA for @state- variables (applies to forms and labels).
#11444: Use @navbar-padding-vertical for nav links vertical padding.
#11449: Prefer Menlo over Monaco for monospaced fonts.
#11468: Prevent default gradient background-image on .navbar-toggle in Firefox for Android.
#11476: Remove unnecessary prefixed keyframe declarations for animated progress bars. Given our browser support requirements, we can drop the -moz- prefix as the last several versions don't require it.
#11477: Use namespace events for dropdowns and carousel.
#11493: Ensure proper width of dropdown buttons within vertical button groups.
#11499: Switch from overflow-y: auto; to overflow-y: visible; to prevent vertical scrollbar in some navbar situations.
#11502: Add missing data namespace for dropdown plugin.
#11513: Float navbar-text elements only when screen width is above @grid-float-breakpoint.
#11515: Reorder the headings with body text and text emphasis classes.
#11516: Invert dropdown divider border in navbars.
#11530: Reworked padding on .navbar-collapse and negative margin for right-aligned navbar content to ensure proper alignment on the right side.
#11536: Add support for button dropdowns within justified button groups.
#11544: Add color: inherit; to .panel-title to ensure proper text color when customizing @headings-color.
#11551: Remove color from outline reset for improved outlines on focus.
#11553: Prevent double border on tables in panels without thead content.
#11598: Remove line breaks in minified CSS.
#11599: Explicitly call out font files in bower.json to avoid npm errors.
#11610: Add @grid-float-breakpoint-max to better link navbar behavior across viewports and improve customization when setting @grid-float-breakpoint.
#11614: Account for responsive tables within panels.
#11617: Include jspm package configuration in package.json.
#11623: Reset position to static for grid columns within tables to prevent borders from hiding in IE9, IE10, and Firefox.
#11648: Restore twelfth column's float.
#11658: Increase min-height of .radio/.checkbox for horizontal forms to ensure alignment of content below.
#11693: Adds .table to responsive visibility mixin.
#11694: Remove unnecessary prefixes for gradient mixins given our stated browser support.
#11712: Better support for .table-responsive within .panel's.
841da88f3fc93740cca07b6e4581a333d77964f0: Remove browser default top margin from dls.

Docs changes

Be sure to run npm install if you're running grunt locally—we've updated our build process and have some new dependencies. - #9898: Improve scrollspy and affix plugin documentation. - #10716: Update "What's included" docs section with info on full source code download directory structure. - #11303: Add link to the docs site in compiled assets, and remove personal usernames. - #11330: Add overflow-x: hidden; to body in offcanvas example to prevent horizontal scrolling. - #11369: Speed up jQuery and Twitter widgets on docs pages by using Google's CDN for jQuery and the async snippet from the Twitter dev site for the widgets. - #11385: Warn about Webkit bug for justified nav example. - #11409: Add release checklist to contributing guidelines. - #11412: Add word-wrap: break-word; to docs Glyphicons class names to ensure proper wrapping in IE10-11. - #11434: Mention form validation class changes in migration docs. - #11534: Document that modal show() and hide() return before animation finishes. - #11634: Add warning to docs to not combine icon classes with other elements. - #11671: Updated third party asset libraries (for Customizer and Holder, our thumbnail utility). - #11701: Switch to Sauce Labs for our cross-browser JS unit testing needs. - 4cbc8d49b10f707029019aaa5eba50e56390a3c5: Remove mention of Chrome from Webkit rendering bug for justified nav.