Tantivy

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- Bugfix race condition when deleting files. (198)

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- Prevent usage of AVX2 instructions (201)

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- Bugfix for non-indexed fields. (199)

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- Raise the limit of number of fields (previously 256 fields) (fulmicoton)
- Removed u32 fields. They are replaced by u64 and i64 fields (65) (fulmicoton)
- Optimized skip in SegmentPostings (130) (lnicola)
- Replacing rustc_serialize by serde. Kudos to benchmarkKodrAus and lnicola
- Using error-chain (KodrAus)
- QueryParser: (fulmicoton)
- Explicit error returned when searched for a term that is not indexed
- Searching for a int term via the query parser was broken `(age:1)`
- Searching for a non-indexed field returns an explicit Error
- Phrase query for non-tokenized field are not tokenized by the query parser.
- Faster/Better indexing (fulmicoton)
- using murmurhash2
- faster merging
- more memory efficient fast field writer (lnicola )
- better handling of collisions
- lesser memory usage
- Added API, most notably to iterate over ranges of terms (fulmicoton)
- Bugfix that was preventing to unmap segment files, on index drop (fulmicoton)
- Made the doc! macro public (fulmicoton)
- Added an alternative implementation of the streaming dictionary (fulmicoton)

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- Expose a method to trigger files garbage collection

code and index format.
You should not expect backward compatibility before
tantivy 1.0.

New Features
------------

- Delete. You can now delete documents from an index.
- Support for windows (Thanks to lnicola)

Various Bugfixes & small improvements
----------------------------------------

- Added CI for Windows (<https://ci.appveyor.com/project/fulmicoton/tantivy>)
Thanks to KodrAus ! (108)
- Various dependy version update (Thanks to Ameobea) 76
- Fixed several race conditions in `Index.wait_merge_threads`
- Fixed 72. Mmap were never released.
- Fixed 80. Fast field used to take an amplitude of 32 bits after a merge. (Ouch!)
- Fixed 92. u32 are now encoded using big endian in the fst
in order to make there enumeration consistent with
the natural ordering.
- Building binary targets for tantivy-cli (Thanks to KodrAus)
- Misc invisible bug fixes, and code cleanup.
- Use


Release a new Tantivy Version

Steps

1. Identify new packages in workspace since last release
2. Identify changed packages in workspace since last release
3. Bump version in `Cargo.toml` and their dependents for all changed packages
4. Update version of root `Cargo.toml`
5. Publish version starting with leaf nodes
6. Set git tag with new version


In conjucation with `cargo-release` Steps 1-4 (I'm not sure if the change detection works):