use nesting to make .table-striped & .table-hover mixin-able again; fixes #11387
more nesting in table.less
add release checklist to CONTRIBUTING file; fixes #11290
Merge pull request #11409 from twbs/add-release-checklist

add release checklist to CONTRIBUTING file
Add unit test for #9920

Merges #10385
Don't deselect radio buttons in data-toggle; fixes #9920

Merges #10787
<3 @asselin for figuring out this combo of 2 patches for #9920; re-grunt
Merge pull request #11376 from twbs/double-click-radio-fix

Double-clicking on a .btn-ized radio button shouldn't de-select it
Merge branch '3.0.0'

Conflicts:
	scss/_tables.scss