Instead we're going to move back to standard exceptions.
Using a custom Result class has created far far more problems
- The Stacktraces aren't always right
- Sometimes one forgets to check the Result error
- All other exception throwing code needing to be converted to Results
- Non idiomatic Dart code
I think it's better to just go back to exceptions. They have their
problems, but overall, I think it's a better approach.
Platform from dart:io cannot be used on the web for reasons. And this
way we get a fake File/Directory class which we can use for atleast
running the web version, even if it won't work.
