Use Data.Word8 when possible

[Vlix]

Wanted to get rid of literal numbers when we can use values from Data.Word8 and have it more obvious what's happening in the code. Also feels more robust to see _colon instead of 58 or 0x3A.

[Vlix]

The new Stackage Nightly seems to be missing a lot of stuff.
Then there's quic and websockets that need to accept bytestring < 0.13, I think.

@kazu-yamamoto do you think you'll be able to add http2, http3, quic, websockets, etc. to the (nightly) stackage in the foreseeable future?

[kazu-yamamoto]

I did it for http2 but I should do for more libraries as you pointed out.
I should find time maybe tomorrow.
The end of year and the beginning of the new year is a vacation period in Japan.
So, please don't expect quick response.
I will work again from 9th January.

[Vlix]

I don't expect anything really, just wondered if you were planning to work on it :)

You have a nice New Year's 👋 take it easy!

[kazu-yamamoto]

LGTM

[kazu-yamamoto]

I have released a new version of quic which allows bytestring 0.12.
http3 does not have the upper boundary.
I don't maintain websockets.