* Update the default value for $enable-deprecation-messages

As seen in the https://github.com/twbs/bootstrap/blob/v4-dev/scss/_variables.scss,
the `$enable-deprecation-messages` variable is set to `true` by default.

* Add a callout for the sanitizer in popovers and tooltips

* Add second reference to sanitizer in the options

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

Should work now with folders with spaces

Unfortunately, they don't offer a `v1` tag

Avoid bug in Firefox where text appears "noisy" due to text-shadow applying to focused form fields.

Fixes #30131



Issue mentions `form-control` but it impacts `.custom-select` — but not `textarea` since it has a qualifying type selector that increases its specificty.

So another way could be to set `select.custom-select` and `input.form-control`. Would there be any other tag concerned by those classes?

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

* use `in` instead of `strings.Contains` since the latter is not documented
* use `cond`

* @babel/cli                  ^7.12.10  →  ^7.12.13
* @babel/core                 ^7.12.10  →  ^7.12.13
* @babel/preset-env           ^7.12.11  →  ^7.12.13
* @rollup/plugin-babel          ^5.2.2  →    ^5.2.3
* @rollup/plugin-commonjs      ^17.0.0  →   ^17.1.0
* @rollup/plugin-node-resolve  ^11.1.0  →   ^11.1.1
* autoprefixer                 ^10.2.3  →   ^10.2.4
* eslint                       ^7.18.0  →   ^7.19.0
* karma                         ^5.2.3  →    ^6.0.4
* karma-qunit                   ^4.1.1  →    ^4.1.2
* linkinator                    2.11.2  →   ^2.13.4
* postcss                       ^8.2.4  →    ^8.2.5
* rollup                       ^2.38.0  →   ^2.38.5
* vnu-jar                      20.6.30  →    21.2.5

Pin karma and linkinator due to failures

* Bump version to v4.6.0.

* Dist

* Backport #32037

Add `.navbar-nav-scroll` for vertical scrolling of navbar content

* drop the css var for a Sass css

Co-authored-by: Mark Otto <markdotto@gmail.com>

Mention CSP and embedded SVGs in v4 docs

Add a live toast example to the docs

* Backport of changes to v5 docs that updated and clarified information about the Sass compiler used and the minimum rounding precision we recommend with it.

Co-authored-by: Mark Otto <otto@github.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>

Fixes #32474

Improve zip-examples.js by only including the assets we need

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

This is so that it's consistent with the JS workflow thus the cache should match.

* Clarify Sass import and customize docs for how to modify variable defaults

* Add an npm starter project callout to a few pages

They're links, acting as links. Just because they're styled as buttons visually (as is often the case for "Call to action" (CTA) links) doesn't mean they need/get `role="button"`

* `border: none`
* `outline: none`

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

* lowercase `runner.os`
* remove `CI` environment variable since it's already set by the runner

Backport of https://github.com/twbs/bootstrap/pull/32754

Manual backport of https://github.com/twbs/bootstrap/pull/32751 (which has not been merged yet, but assume it will shortly)

Manual backport of https://github.com/twbs/bootstrap/pull/32689

Manual backport of https://github.com/twbs/bootstrap/pull/32631

package.json: move `version_short` variable under the `config` object

This is so that it works on npm 7.x too.

* rename constants
* enforce the constants to be Boolean
* use the coverage plugin only one time, on the latest jQuery run
* fix karma `logLevel`

* @babel/cli                   ^7.12.8  →  ^7.12.10
* @babel/core                  ^7.12.8  →  ^7.12.10
* @babel/preset-env            ^7.12.7  →  ^7.12.11
* @rollup/plugin-babel          ^5.2.1  →    ^5.2.2
* @rollup/plugin-commonjs      ^16.0.0  →   ^17.0.0
* @rollup/plugin-node-resolve  ^10.0.0  →   ^11.0.1
* autoprefixer                 ^10.0.2  →   ^10.2.1
* cross-env                     ^7.0.2  →    ^7.0.3
* eslint                       ^7.14.0  →   ^7.17.0
* eslint-config-xo             ^0.33.1  →   ^0.34.0
* eslint-plugin-unicorn        ^23.0.0  →   ^25.0.1
* find-unused-sass-variables    ^3.0.0  →    ^3.1.0
* hugo-bin                     ^0.66.2  →   ^0.68.0
* linkinator                    ^2.2.2  →   ^2.11.2
* nodemon                       ^2.0.6  →    ^2.0.7
* postcss                      ^8.1.10  →    ^8.2.3
* postcss-cli                   ^8.3.0  →    ^8.3.1
* qunit                        ^2.12.0  →   ^2.13.0
* rollup                       ^2.33.3  →   ^2.36.1

Add two new variables for pagination border-radius values

Docs: Tweak the wording for collapse to indicate button is preferred/more semantic

Clarify the `$enable-shadows` option in our docs