Use more PHP standards (namespaces)

CI4 has to leave BC otherwise it'll have a hard time exploring PHP's latest features and speed. Devs deciding BC can focus on CI3 instead. I was against this at first however, from time to time I see the benefits of PSRs and they really are valid --making things simple and consistent. Don't follow Laravel's huge framework and complicated style. Just keep it simple by changing a few things to work on PSRs and leverage the new PHP. By the way, don't remove the third_party folder. It can be used to store files especially for a code generator. I don't like digging into Composer's vendor folder.

Long live CodeIgniter!

CI4 has to leave BC otherwise it'll have a hard time exploring PHP's latest features and speed. Devs deciding BC can focus on CI3 instead. I was against this at first however, from time to time I see the benefits of PSRs and they really are valid --making things simple and consistent. Don't follow Laravel's huge framework and complicated style. Just keep it simple by changing a few things to work on PSRs and leverage the new PHP. By the way, don't remove the third_party folder. It can be used to store files especially for a code generator. I don't like digging into Composer's vendor folder.

PSRs have nothing to do with new PHP features.