The initial release which can read a complete index, version 2 to 4, with all extensions.
The reading can be performed with multiple threads as well, partially depending on whether
certain extensions are present.

### Commit Statistics

 - 71 commits contributed to the release over the course of 490 calendar days.
 - 509 days passed between releases.
 - 0 commits where understood as [conventional](https://www.conventionalcommits.org).
 - 1 unique issue was worked on: #293

### Thanks Clippy

[Clippy](https://github.com/rust-lang/rust-clippy) helped 5 times to make code idiomatic. 

### Commit Details

 * **#293**
    - prepare changelogs for git-index and dependencies (f54bf4b)
    - Test for extra-long paths (3d61afe)
    - Test for extended flags (ae3b697)
    - Use bitflags for Flags (in-memory and at-rest) (ea86eb0)
    - Use bitflags for entry Mode (53df605)
    - FSMN V2 decoding (04279bf)
    - Failing test for fs-monitor V1 (625b89a)
    - Validate UNTR with exclude-file oids (20ebb81)
    - read remaining pieces of UNTR (9d9cc95)
    - Make stat parsing more general/reusable (c41b933)
    - refactor (a1dc8de)
    - simplify UNTR directory indexing (7857d08)
    - flatten UNTR directory list for later access via bitmaps (2e39184)
    - read UNTR directory blocks and bitmaps (59f46fe)
    - First portion of reading the untracked cache (ed2fe5d)
    - failing test for UNTR extension (223f2cc)
    - Add UNTR extension fixture (3c7ba24)
    - REUC reading works (29c1af9)
    - frame and test for REUC exstension (229cabe)
    - add git index with REUC exstension (8359fdb)
    - Support for 'sdir' extension (a38c3b8)
    - Turn git-bitmap Array into Vec, as it will be able to adjust its size (9e99e01)
    - first stab at decoding ewah bitmaps (353a53c)
    - 'link' extension decoding to the point where bitmaps are needed (e18a2fd)
    - support for errors in extensions (8971991)
    - failing test for link decoding (e1daf18)
    - don't forget to fail on unknown mandatory extension (f7e2bdd)
    - Aggregation for index entries loaded in parallel (995994a)
    - parallel loading of entries right before reducing them (de84a3a)
    - Frame for using the new 'scoped threads' feature in git-features (6fea17d)
    - single and multi-threaded index tests (a22cb0f)
    - prepare decode options for better control of threads (30de988)
    - cleanup (99d7224)
    - Basic IEOT parsing (35bdee4)
    - refactor (6f04f8b)
    - parse V4 delta-paths (06640e3)
    - more thorough tests for more complex repo with more entries (273853f)
    - The first test to validate an entry (f865ef6)
    - Now with counting of consumed bytes in extensions (77a062c)
    - Use correct post-header slice when parsing entries (da556b0)
    - All code needed to load extensions… (0a03f19)
    - a step towards pasing V2 paths (01036ad)
    - Most of the entry decoding, name is still missing (53e2d75)
    - Extensions are optional, and so is their iteration (620d2e6)
    - Prepare a more complex test for tree parsing, requires entry parsing (e7e0679)
    - parse TREE chunk (a2ea498)
    - Get closer to implementing a simple TREE extension decoding (49fcb6f)
    - refactor (07e8fb2)
    - the first actual assetion (c17240d)
    - refactor (d4b3a07)
    - refactor (9fdd34b)
    - Fix counting issue, checksum matches now (cc33752)
    - Another big step, even though EOIE checksum is still bugged (9ffd523)
    - right before implementing a traversal over extension chunks (79ca582)
    - refactor (9b28b18)
    - first step towards reading the EOIE extension (068c716)
    - parse index header (5c731f8)
    - first stab at basic index file parsing (826ca0c)
    - refactor (494ed46)
    - git-index uses memmap2 (fbfea28)
    - The realization that FileBuffer really shouldn't be used anymore (b481f13)
    - base setup for index testing (aa60fdf)
    - notes on how test indices have been created (3040857)
 * **Uncategorized**
    - thanks clippy (09df2bc)
    - thanks clippy (93c3d23)
    - Fix index without extension test & thanks clippy (066464d)
    - thanks clippy (f477032)
    - thanks clippy (5526020)
    - thanks clippy (591511a)
    - remove dash in all repository links (98c1360)
    - refactor (e4bcfe6)