Understanding canonical URLs in v1.0

davwheat Many improvements to canonical URL generation.

does this mean all sub URLs will now have canonical URL of the main discussion URL?

for example :

main discussion https://discuss.flarum.org/d/27394-flarum-100-released/

near URL https://discuss.flarum.org/d/27394-flarum-100-released/near?5

Sub URL https://discuss.flarum.org/d/27394-flarum-100-released/37

so if the spider sees a near? URL or sub URL the core is set to consider the main URL? or this consideration needs to be done using an SEO extension?