1bf885550e Redesign `hex::BufEncoder` to accept owned arrays (Martin Habovstiak)
Pull request description:
Not being able to create an owned `BufEncoder` prevented returning it from functions which need to allocate the buffer on stack. Such is the case in WIP serde via consensus serialzation.
This change refactors `OutBytes` to be unsized, adds an `AsOutBytes` trait and uses that one instead of `Into` to perform the conversion.
Closes#1270
This is meant as potentially mergeable demonstration. Interestingly, it was easier than I expected.
ACKs for top commit:
tcharding:
Except for the question about the `out_bytes` module, ACK 1bf885550e
apoelstra:
ACK 1bf885550e
Tree-SHA512: 39bc48e54ae0e66b988ba5ad6ea7ecbe03e5f4c71792df0f8e2b03aa2e97e2c0fac1cb03e84ecac12ec6f13649554b57e1000710c34c638d17d9bb575d0ac0a1