git-annex/doc/todo/add_xxHash_backend.mdwn

From https://cyan4973.github.io/xxHash/ , xxHash seems much faster than md5 with comparable quality.  There's a Haskell implementation.

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added suggestion to add xxHash backend 2018-11-15 07:28:24 +00:00			`From https://cyan4973.github.io/xxHash/ , xxHash seems much faster than md5 with comparable quality. There's a Haskell implementation.`
tagged the past 2 years of open todos and followed up to a few of them also moved some that were really bug reports to bugs/ and closed a couple 2020-01-30 19:22:05 +00:00
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