FIX: #13355. Added .navbar-nav to migration change list.
add IE10 viewport bug workaround to examples

Closes #13379.
document that non-:visible scrollspy targets are ignored; fixes #13394
fixes #13157 - Collapse plugin - issues with transition end event bubbling
the master branch is the relevant one for current build status
Merge pull request #13397 from twbs/fix-13394

document that non-:visible scrollspy targets are ignored
document that show-ing a tooltip/popover on a hidden element doesn't work; fixes #13362
Merge pull request #13374 from Jakobovski/fix-issue-#13355

FIX: #13355. Added .navbar-nav to migration change list.
Merge pull request #13390 from twbs/ie10-viewport-bug

add IE10 viewport bug workaround to examples
Merge pull request #13176 from twbs/fat-13157

fixes #13157 - Collapse plugin - issues with transition end event bubbli...
Merge pull request #13423 from twbs/fix-13362

document that show-ing a tooltip/popover on a hidden element doesn't work
Fix incorrect offset from top when affixed element is affix-bottom.
Separate determining the affix state into a separate, expanded, method.
Always reposition an affix-bottom to better handle dynamic document height.
Add additional case for a bottom affix that has no top offset to ignore unpin.
Use double equals for null/undefined checks.
Refactoring to combine case where affix is initialized/pinned.