title: All bootstrap breakpoints deprecated?
body: <p>Looking at variables.less (and from googling around), it looks like all of bootstrap's breakpoint less variables are deprecated. Is this correct? Does anybody know what we should be using instead if we want to assign styles based on bootstrap's screen-size breakpoints? Using Bootstrap v3.1.1 with LESS. Thanks.</p>
  
  <pre><code>//== Media queries breakpoints
  //
  //## Define the breakpoints at which your layout will change, adapting to different screen sizes.
  
  // Extra small screen / phone
  //** Deprecated `@screen-xs` as of v3.0.1
  @screen-xs:                  480px;
  //** Deprecated `@screen-xs-min` as of v3.2.0
  @screen-xs-min:              @screen-xs;
  //** Deprecated `@screen-phone` as of v3.0.1
  @screen-phone:               @screen-xs-min;
  
  // Small screen / tablet
  //** Deprecated `@screen-sm` as of v3.0.1
  @screen-sm:                  768px;
  @screen-sm-min:              @screen-sm;
  //** Deprecated `@screen-tablet` as of v3.0.1
  @screen-tablet:              @screen-sm-min;
  
  // Medium screen / desktop
  //** Deprecated `@screen-md` as of v3.0.1
  @screen-md:                  992px;
  @screen-md-min:              @screen-md;
  //** Deprecated `@screen-desktop` as of v3.0.1
  @screen-desktop:             @screen-md-min;
  
  // Large screen / wide desktop
  //** Deprecated `@screen-lg` as of v3.0.1
  @screen-lg:                  1200px;
  @screen-lg-min:              @screen-lg;
  //** Deprecated `@screen-lg-desktop` as of v3.0.1
  @screen-lg-desktop:          @screen-lg-min;
  </code></pre>