Highlights

• New: (Finally!) Added responsive container classes.
• New: Added .row-cols-* shortcut classes to quickly set the width of all columns in a row. Use this for responsive card decks!
• New: The escape-svg sass function to escape svg's when used as data URI for background images.
• Fixed: Changed :disabled selectors to [disabled] to fix a bug with Microsoft Edge
• Deprecated: bg-variant() mixin because v5 is changing our background utilities to no longer have focus/hover styles
• Deprecated: form-control-focus() mixin because it's only used once

CSS

• Fix buttons :focus state styles #27890: Fix buttons :focus state styles
• Reset padding of .form-control-plaintext #28208: Reset padding of .form-control-plaintext
• Deprecate form-control-focus mixin #28262: Deprecate form-control-focus mixin
• Workaround for MS Edge does not update disabled control's style #28275: Change :disabled to [disabled] for Edge
• [css] Fix breaking layout breaking error in code block #28328: Change word-break: break-word to word-wrap: break-word in <code> elements
• Fix border if only one card #28365: Fix border if only one card in accordion
• Disable ascending check if the previous unit was a percentual value #28400: Disable _assert-ascending function's check if the previous unit was a percent value
• Scrollbar fix #28417: Fix scrollbars in screenreader utilities
• Prevent form validation mixin from generating invalid CSS #28447: Prevent form validation mixin from generating invalid CSS
• Sync plain text font-size with $input-font-size #28464: Sync plain text font-size with $input-font-size
• Fix prefers-reduced-motion for animated progress bars #28530: Fix prefers-reduced-motion for animated progress bars
• Remove scss variable defined twice #28567: Remove duplicate $table-dark-color variable
• White gaps in modals because of border radius #28585, Calc modal header/footer border radius according to the border width #28775: Calculate modal header/footer border radius according to the border width
• Add variable for .custom-control-label's color #28633: Add variable for .custom-control-label's color
• Fix incorrect variable for popover border radius #28733: Fix incorrect variable for popover border radius
• input-group looks compressed and broken. #28782, Clean input group flex basis #28785: Cleanup .input-group's use of flex-basis.
• Fix z-index according to our z-index rule #28784: Adjust z-index on pagination according to our z-index rules
• Fix background position for form-validation #28814: Fix background position for form-validation
• Fix position of browser default validation message (v4) #28852: Adjust position of browser validation messages on custom checks and radios
• Fix width and height of data svg images in IE10 #28883: Add width and height to SVG background-images for IE10
• Deprecate bg-variant() mixin #28938: Deprecated bg-variant() mixin
• Change invalid icon from cross to exclamation mark #28944: Move to exclamation icon on invalid form fields to avoid implying "clear field" functionality
• Remove redundant radius properties #28956: Remove redundant radius properties on .list-group-item
• Use escape-svg() function #29077: Use escape-svg() function
• v4/v5: Add responsive containers #29095: Add responsive containers
• docs broken form examples #29204, Fix min-width of input-group flex items #29209: Fix min-width of .input-group flex items in Firefox.
• Add deprecation warning #29268 Deprecate text-emphasis-variant() mixin
• v4/v5: Row columns for responsive card decks and more #29073: Add row columns for responsive card decks and more

JS

• reset carousel touch delta x to prevent click transformed in swipe #28558: Reset carousel touch delta x to prevent click transformed in swipe
• Call toast hide() after delay time #28630: Call toast hide() after delay time
• fix unit tests for chrome mobile #28656: Fix unit tests for Chrome Mobile
• toast should allow prevent default for hide and show events #28777: Toasts should allow prevent default for hide and show events
• Fix keyboard handling of button-style checkbox/radio button groups #28834: Fix keyboard handling of button-style checkbox/radio button groups
• tooltip dispose:removing only own event handler #28896: Remove listeners created by tooltip during dispose method
• Don't open dropdown on ESC on trigger element #28912: Don't open dropdown on escape of triggering element
• Add missing dropdown unit test for closing with ESC #28929: Add unit test for closing dropdowns with escape key
• Ensure button plugin sets/removes active class correctly on page load #28952: Ensure button plugin sets/removes active class correctly on page load

Docs

• Typo fix #28920, Update collapse.md #29025, Multiple broken documentation links #29034, #29034 Fix broken links #29035, Added link to creative commons license #29032, Updated sentence #29051: Fix links and typos
• Create SECURITY.md #28288: Create SECURITY.md for security policies and workflows
• accessibility - add aria-disabled on all disabled links #28305: Add aria-disabled on all disabled links
• docs- add an explicit aria-label on link with svg on sample pages #28360: Add explicit aria-label on icon-only links in Examples
• doc - put secondary navigation in an explicit landmark nav #28361: Add landmarks for secondary navigation
• Remove redundant placeholders in forms docs #28406: Remove redundant placeholders in forms docs
• Remove indiscriminate outline suppression for tabindex="-1" elements #28437: Remove indiscriminate outline suppression for tabindex="-1" elements
• GA: anonymize IPs #28491: Anonymize Google Analytics IP addresses
• Docs: add accessibility/keyboard callout to popovers, tweak tooltips callout #28851: add accessibility/keyboard callout to popovers, tweak tooltips callout
• Combine duplicate documentation examples into one to fix the confusing text. #28939: Combine duplicate grid docs sections
• Add ARIA search landmark to documentation. #28983: Add ARIA search landmark
• Add prefers-reduced-motion callout to toast documentation #28993: Add prefers-reduced-motion callout to toast documentation
• Remove iconic and add feather icons. #29079: Remove unmaintained Iconic set and bump Feather to preferred

Build

• Move bundlesize config to a separate file. #29002: Moved bundlesize config to separate file
• Use npm-run-all in the netlify script. #28846: Use npm-run-all in the netlify script
• Update devDependencies and gems