See https://blog.getbootstrap.com/2019/02/11/bootstrap-4-3-0/
and https://blog.getbootstrap.com/2019/02/13/bootstrap-4-3-1-and-3-4-1/
Again, some fixes were added in this version and not in a 4.2.x version
so there is no clean way to backport them in 12.0 / saas-12.2.
If needed, the file bootstrap_review.scss is there for that.
Among the new features, two notable ones:
- The '.modal-dialog-scrollable' class which does what odoo already
implemented for all its modals. So we could remove our custom code in
a next update.
- Responsive font sizes ! Plan was to develop something similar for the
website, so this comes at the right time. The behavior is opt-in, we
will enable it in a next update.
Part of https://github.com/odoo/odoo/pull/31401
task-1944790
Before this commit the bootstrap version we used was inconsistent.
Indeed, the javascript files were the 3.3.4 ones and the less files
were the 3.3.5 ones. This was due to a failed merged resolution in 9.0.
This should however not cause any issue as the difference between
3.3.x versions are very minor.
Basically, this commit is more of a fix than an improvement and may
even be backported if we find reasons to do so. This commit is mainly
made to prepare the transition to version 4.0.0, which requires to
switch our LESS files to SCSS first (and it will be easier to go by
bootstrap 3.3.7 with SCSS files first).