vartheme_bs4 8.x-6.21

• Issue #3178141: Updated Bootstrap library from 4.5.2 to 4.5.3

• Updated the Bootstrap library to 4.5.3 for Vartheme BS4 and VARTHEM_BS4_SUBTHEME

• Added the new bootstrab variable $table-th-font-weight: null !default;
  https://github.com/twbs/bootstrap/blob/v4.5.3/scss/_variables.scss#L366
• Added the new bootstrab variable $dropdown-padding-x: 0 !default;
  https://github.com/twbs/bootstrap/blob/v4.5.3/scss/_variables.scss#L759

Bootstrap 4.5.3 was released Oct 13, 2020

https://github.com/twbs/bootstrap/releases/tag/v4.5.3

CSS

• #31653: Add a comment to our escape-svg function to note that data URIs must be quoted.
• #31693: Use the custom-control shadow variable instead of the generic input-focus-box-shadow.
• #31793: Backport some v5 changes (improved th styling in Reboot, custom form field styling when printing, and improvements to .text-break).
  • #29714: Keep custom check, radio, and switch theme when printing.
  • #30781: Reboot's th updates: Inherit font-weight: bold that comes from user agent stylesheets.
  • #30932: .text-break changes to drop overflow-wrap and use word-wrap once again
  • #31754: Improve versions page rendering (also reversed the order while I was here)
• #31846: Backports the z-index change to .close buttons in dismissible .alerts.

JS

• #31000: Avoid multiple change event trigger in buttons plugin. Not applicable to v5 since our button JS plugin has been mostly replaced with pure CSS.
• #31673: Fix dropdown variable always evaluating to true.
• #31696: Ensure hidePrevented.bs.modal can be prevented.
• #31718: Backports new $dropdown-padding-x variable from v5.

Docs

• #30811: Mention GPU acceleration fix in docs callout for popovers. Doesn't apply to v5 since we're updating to Popper v2.
• #30838: Explain the dispose method more appropriately.
• #31706: Backports updated margins for code snippets for improved readability.
• #31769: Backports JS bundle guidance from v5.
• #31851: Backports mention of missing to and nextwhenvisible methods.

Misc

• #31297: Switch to xo ESLint config
• Updated devDependencies versions