[Release candidate] v10 prerelease

[mafintosh]

@andrewosh and I (but mostly @andrewosh) have been busy getting Hyperdrive v10 ready to ship. It's a major change that moves the internal filesystem structure to hypertrie, for massive perf boosts.

The is the first "official" step towards multiwriter as the trie enables the data structures needed for that, but v10 will still be a single writer only hyperdrive, focused on getting the trie out so we can get some milage on that.

Also massively increases test coverage.

NOTE: we are still finishing up the last parts of the API

Prerelease Checklist

• [x] Support for writable file descriptors
• [x] Stateful file descriptor fuzz test(s)
• [ ] Benchmark + test completeness with a barebones FUSE implemention (minus random-access writes)
• [ ] Support for "live" files (writing a stat object at the beginning of the file write with a live flag)

[yoshuawuyts]

@mafintosh are you planning to release a blog post when v10 is released? Even if it's short, this seems like it might be a good opportunity to do a bit of marketing, and helping others catch up on what's changed.

[mafintosh]

@andrewosh looking great! left a review but mostly nits. I'm thinking it's work moving back to content, metadata instead of contentFeed, metadataFeed. Whilst I like the latter, we reduce a ton of breakage by not changing them yet.

[andrewosh]

@andrewosh looking great! left a review but mostly nits. I'm thinking it's work moving back to content, metadata instead of contentFeed, metadataFeed. Whilst I like the latter, we reduce a ton of breakage by not changing them yet.

Sounds good, changed the names back in the latest commits.

[mafintosh]

Rebased into master 💥 🎉