` tags, as well as buttons, navs, dropdowns, and more.
- - Added print utility classes to show and hide content between `screen` and `print` via CSS.
- - Updated input groups to make them behave more like default form controls. Added `display: inline-block;`, increased `margin-bottom`, and added `vertical-align: middle;` to match `` styles.
- - Added `.horizontal-three-colors()` gradient mixin (with example in the CSS tests file).
- - Added `.text-left`, `.text-center`, and `.text-right` utility classes for easy typographic alignment.
- - Added `@ms-viewport` so IE10 can use responsive CSS when in split-screen mode.
-- **Docs changes:**
- - Added [new justified navigation example](https://f.cloud.github.com/assets/98681/25869/5e2f812c-4afa-11e2-9293-501cd689232d.png).
- - Added sticky footer with fixed navbar example.
-
-See more on the [2.3.0 pull request](https://github.com/twitter/bootstrap/pull/6346).
-
-
-## 2.2.2 (December 8, 2012)
-
-Bugfix release addressing docs, CSS, and some JavaScript issues. Key changes include:
-
-- **Docs:**
- - Assets (illustrations and examples) are now retina-ready.
- - Replaced [Placehold.it](http://placehold.it) with [Holder.js](http://imsky.github.com/holder/), a client-side and retina-ready placeholder image tool.
-- **Dropdowns:** Temporary fix added for dropdowns on mobile to prevent them from closing early.
-- **Popovers:**
- - No longer inherits `font-size: 0;` when placed in button groups.
- - Arrows refactored to work in IE8, and use less code.
- - Plugin no longer inserts popover content into a ``, but rather directly into `.popover-content`.
-- **Labels and badges:** Now [automatically collapse](https://github.com/twitter/bootstrap/commit/ead5dbeba5cd7acfa560bfb353f5e7c4f4a19256) if they have no content.
-- **Tables:** Nesting support with `.table-bordered` and `.table-striped` greatly improved.
-- **Typeahead:**
- - Now [inserts dropdown menu after the input](https://github.com/twitter/bootstrap/commit/1747caf19d59cad7fdc90ae56a00e0e2849f95f4) instead of at the close of the document.
- - Hitting escape will place focus back on the ``.
-- Print styles, from HTML5 Boilerplate, have been added.
-
-See more on the [2.2.2 milestone](https://github.com/twitter/bootstrap/issues?milestone=17&state=closed).
-
-
-## 2.2.1 (October 30, 2012)
-
-Hotfix release to address the carousel bug reports.
-
-
-## 2.2.0 (October 29, 2012)
-
-### tl;dr
-
-2.1.2 is now 2.2.0: four new example templates, added media component, new typographic scale, fixed that box-shadow mixin bug, fixed z-index issues, and [more](https://github.com/twitter/bootstrap/issues?milestone=15&page=1&state=closed).
-
-### Highlights
-
-- **Added four new example templates** to the docs, including a narrow marketing page, sign in form, sticky footer, and a fancy carousel (created for an upcoming .net magazine article).
-- **Added the media component**, to create larger common components like comments, Tweets, etc.
-- **New variable-driven typographic scale** based on `@baseFontSize` and `@baseLineHeight`.
-- Revamped mini, small, and large padding via new variables for inputs and buttons so everything is the same size.
-- Reverted 2.1.1's `.box-shadow();` mixin change that caused compiler errors.
-- Improved dropdown submenus to support dropups and left-aligned submenus.
-- Fixed z-index issues with tooltips and popovers in modals.
-- Hero unit now sets basic type styles for the entire component, rather than on `.hero-unit p { ... }`.
-- Updated JavaScript plugins and docs to jQuery 1.8.1.
-- Added Contributing.md file.
-- Added support for installing Bootstrap via [Bower](http://twitter.github.com/bower).
-- Miscellaneous variable improvements across the board.
-- Miscellaneous documentation typos fixed.
-
-For the full list of issues included in this release, visit the [2.2.0 milestone on GitHub](https://github.com/twitter/bootstrap/issues?milestone=15&page=1&state=closed)
-
-
-
-## 2.1.1 (September 4, 2012)
-
-* New feature: alert text. We documented these new classes, like `.text-success`, at the bottom of the [Typography section](http://twitter.github.com/bootstrap/base-css.html#typography) along with the long undocumented `.muted`.
-* Fixed a lot of typos in the docs. Spelling is hard.
-* Made the `.box-shadow()` mixin more durable. It no longer requires escaping for multiple shadows, meaning you can easily use variables and functions in them once again.
-* Widened `.dl-horizontal dt` and `.horizontal-form .control-group` to better handle the increased font-size.
-* Dropdown submenus improved: now you only see the next level, not all levels, on hover of the submenu toggle.
-* Clarified jQuery and Bootstrap template requirements in Getting Started section.
-* `select` now utilizes `@inputBorder`.
-* `.lead` now scales up from `@baseFontSize` instead of being a fixed font-size and line-height.
-* Fixed the vertical three color gradient in latest Firefox.
-* Reordered some variables that caused errors in certain Less compilers.
-
-View all closed issues on the [2.1.1 milestone](https://github.com/twitter/bootstrap/issues?milestone=14&state=closed).
-
-
-## 2.1.0 (August 20, 2012)
-
-### Key changes
-
-* Submenu support on dropdowns
-* Affix JavaScript plugin
-* Block level buttons
-* State classes on table rows
-* Improved disabled states on navs and dropdowns
-* The navbar component is now white by default, with an optional class to darken it
-* Improved prepended and appended inputs
-* New base font-size and line-height
-* Added variable for navbar collapse trigger point
-* Fluid grid offsets
-* Fluid grid system variables are no longer fixed percentages
-* Removed LESS docs page
-
-For full set of changes, see the completed milestone: https://github.com/twitter/bootstrap/issues?milestone=7&page=1&state=closed
-
-## 2.0.4 (June 1, 2012)
-
-
-### Docs
-
-- Added `type="button"` to all dismiss buttons in alerts and modals to avoid a bug in which they prevent their parent's `form` from properly submitting.
-- Added simple documentation to Base CSS for `.lead`.
-- Added new CSS test to illustrate how the navbar, static and fixed, behaves.
-- Clarified grid sizing copy to include mention of responsive variations.
-- Reformatted the LESS docs page to prevent terrible table displays at smaller grid sizes.
-- Miscellaneous typos and tweaks.
-
-### CSS
-
-- Refactored forms.less to make our selectors more specific for fewer overrides and less code. Instead of a generic `input` selector and various resets, we target each type of input like `input[type="text"]`, `input[type="password"]`, etc.
-- Form field state (e.g., success or error) now applies to checkbox and radio labels.
-- Removed redundant CSS on `
` for `font-family`, `font-size`, and `line-height`.
-- Removed redundant `color` declaration from the `