Bootstrap v5: drop Internet Explorer support
IE 11 is still supported by Microsoft because it is tied to Windows 10 support.<p>If you're B2C you can probably ignore that and just not support it, but if you're B2B where you're selling not to users it's very hard to get away from supporting IE11.<p>If your users never directly interact with you (for example you sell white-label software which gets resold) then you just can't control your end-user tech stack enough.<p>If you're selling to partners who sell to companies who push out logins to their customers or user base then even if <1% of users use IE 11, that becomes 5% of companies having a user with it, which becomes 30% of the partners who are asking for IE11 support.<p>It's one thing to turn down 1% of users it's quite another to annoy 30% of your income stream.<p>As long as bootstrap 4 is supported (and the legacy bootstrap 3 support suggests it will be) then this doesn't have to be a problem of course, just one more thing to be aware of.