Raw ch0 and ch1 got edited post publishing

I think they took the feedback that it was confusing and decided to edit ch0 and ch1, so the chapters here are outdated. They edited some texts, and also added some new chunks. They're very minor edits, but they added more on explaining the concept of DER for those unfamiliar with these kinds of wikis. Very minor changes that doesn't really impact your understanding once you've finished the Abyss Train arc

Not sure if any groups will decide to redo the chapters since it's very minor changes, but it definitely will be easier to understand now for people who hasn't started the series *^^*