Utf8 text from Chunks

[Boarders]

It would be nice to have a function to convert from Chunks to utf8-text in the form of either new text or ShortText as otherwise one has to pass through bytestring.

[andrewthad]

Chunks are not generally byte sequences of utf-8-encoded text, but in many cases, it's easy for the user to enforce this invariant. I'd take a PR adding a Data.Bytes.Chunks.Unsafe module with a toShortText function and the precondition documented. A similar toText function would be fine, but I cannot require text-2.x as a dependency yet since most of my own projects cannot use text-2.x yet. If you add text >= 1.2 and make the existence of toText conditional on the version of text (omitting it when text < 2.0), that would be fine.

[Boarders]

Perfect, I am in favour of encouraging ShortText anyway as sliced text rarely seems to be preferable to me. I'll add a PR in the coming week.