Could be more resilient to non-utf8-encoded output

[dabrahams]

Here I think it would be better to accumulate everything in Data and only attempt to decode it when you finally need a string. Then you could (optionally) try multiple encodings and fall back to encoding-repairing conversion by appending a nul character and using String.decodeCString(p, as: UTF8.self, repairingInvalidCodeUnits: true).

https://github.com/flintprocessor/Work/blob/4a7a6ff7a87bac408cfc69382b8332f53f89e046/Sources/Work/Work.swift#L92