• Added new custom range form control.
• Added new .carousel-fade modifier to switch carousel from horizontal sliding to crossfade.
• Added new .dropdown-item-text for plaintext dropdown items.
• Added new .flex-fill, .flex-grow-*, and .flex-shrink-* utilities.
• Added new .table-borderless variant for tables.
• Added new .text-monospace utility.
• Added new .text-body (default body color), .text-black-50 (50% opacity black), and .text-white-50 (50% opacity white) utilities.
• Added new .shadow-* utilities for quickly adding box-shadows.
• Added ability to disable Popper's positioning in dropdowns.
• Fixed longstanding issue with Chrome incorrectly rendering cards across CSS columns.
• Deprecated .text-hide—you'll see a warning during compilation—as it's a dated and undocumented feature.
• Fixed up Dashboard and Offcanvas examples across Firefox and IE.
• Breadcrumbs can now use non-string values as dividers.
• Updated our Theming docs to confirm you cannot use CSS variables in media queries (sorry folks!).

Be sure to look at the ship list and project board for more details on all our fixes.