Feat: Support horizontal collapse

[demetrius-mp]

i was trying to rebuild this sidebar using sveltestrap, but the default animations works only vertically, which feels weird for this use case. I tried adding .collapse-horizontal to the Collapse component, but it happened to be even weirder.

[demetrius-mp]

or maybe provide a workaround for the moment, cause i really dont see other way to "fix" this but to use bootstrap javascript, which is not desirable

[bestguy]

Thanks, yeah I attempted adding support and was a little confused on how this was supposed to work. Happy to take a look again and either PR or add my notes here if someone could pick it up.

[bestguy]

I think this is straightforward if you'd like to review @demetrius-mp : https://github.com/bestguy/sveltestrap/pull/445/files

[demetrius-mp]

it works just great! you can close the issue if you want.

[bestguy]

Released in v5.9.0, thanks for the heads up.