Internationalisation needed an overhaul. The new Internationalisation uses 302 redirects instead of the transparent internal redirect that occured. The new implementation uses redirects and different paths for each language. If https://example.com/ is requested in NZ a 302 redirect will occur to https://example.com/en_nz/ and it will served the NZ locale. If https://example.com/es/ is requested the ES version will be served with no redirect as the locale is already defined in the path. Due to this change a default locale setting has been added which is available once a locale has been added to the _locale folder.
On top of Internationalisation are the following fixes: