Bootstrap 3.3.5 released

Bootstrap 3.3.5 is here! This release has focused on bug fixes, accessibility improvements, and documentation updates. We’ve had over 330 commits and 160 closed issues and pull requests from over 40 contributors since our last release! Hell yeah. Here are some of the highlights: Updated to Normalize.css v3.0.3. Updated main in bower.json to comply with recent update to the bower.json specification List groups now support <button> elements. Cleaned up some extraneous padding on jumbotrons across various viewports. Fixed input group sizing classes on all supported elements for real this time. Applied a few tooltip and popover positioning fixes. Fixed behavior when using tooltips and popovers that are triggered by multiple events. Fixed some memory leakage in the tooltip and popover plugins. Fixed incorrect Affix positioning when a webpage has a sticky footer. Fixed npm package to include all Grunt scripts, so that grunt dist works if you installed Bootstrap from npm. For a complete breakdown, read the release changelog and the v3.3.5 milestone.