[Full Changelog](https://github.com/nodegit/nodegit/compare/v0.26.3...v0.26.4)

- Bumped LibGit2

- Now can be configured to support longpaths on Windows. Does not respect the config value, but is configured through `NodeGit.Libgit2.opts`. See [#1748](https://github.com/nodegit/nodegit/pull/1748) for details.

- Support for complex SSH auth creds handshakes

- Pulled in patch for Libssh2 that covers an integer overflow, see [Libssh2#402](https://github.com/libssh2/libssh2/pull/402)

- [Fix some issues from the libgit2 bump](https://github.com/nodegit/nodegit/pull/1751)

- [Add option to support longpaths on Windows](https://github.com/nodegit/nodegit/pull/1748)

- [Bring in libssh2#402](https://github.com/nodegit/nodegit/pull/1749)

- [Wait for copy and remove promises to finish](https://github.com/nodegit/nodegit/pull/1730)

- [Support `core.longpaths` on Windows #5347](https://github.com/libgit2/libgit2/pull/5347)

- [Parallelize checkout_create_the_new for perf #4205](https://github.com/libgit2/libgit2/pull/4205)

- [win32: fix relative symlinks pointing into dirs](https://github.com/libgit2/libgit2/pull/5355)

- [ntlm: prevent (spurious) compiler warnings](https://github.com/libgit2/libgit2/pull/5354)

- [Adds support for multiple SSH auth mechanisms being used sequentially](https://github.com/libgit2/libgit2/pull/5305)

- [netops: handle intact query parameters in service_suffix removal](https://github.com/libgit2/libgit2/pull/5339)

- [Refactor packfile code to use zstream abstraction](https://github.com/libgit2/libgit2/pull/5340)

- [Fix git_submodule_sync with relative url](https://github.com/libgit2/libgit2/pull/5322)

- [http: avoid generating double slashes in url](https://github.com/libgit2/libgit2/pull/5325)

- [Correct typo in name of referenced parameter](https://github.com/libgit2/libgit2/pull/5348)

- [patch_parse: fix undefined behaviour due to arithmetic on NULL pointers](https://github.com/libgit2/libgit2/pull/5338)

- [smart_pkt: fix overflow resulting in OOB read/write of one byte](https://github.com/libgit2/libgit2/pull/5337)

- [branch: clarify documentation around branches](https://github.com/libgit2/libgit2/pull/5300)

- [examples: checkout: implement guess heuristic for remote branches](https://github.com/libgit2/libgit2/pull/5283)

- [Minor doc improvements](https://github.com/libgit2/libgit2/pull/5320)

- [attr: Update definition of binary macro](https://github.com/libgit2/libgit2/pull/5333)

- [Security fixes for master](https://github.com/libgit2/libgit2/pull/5331)

- [release.md: note that we do two security releases](https://github.com/libgit2/libgit2/pull/5318)

- [MSVC: Fix warning C4133 on x64: "function": Incompatible types - from "unsigned long *" to "size_t *"](https://github.com/libgit2/libgit2/pull/5317)

- [ci: only push docs from the libgit2/libgit2 repo](https://github.com/libgit2/libgit2/pull/5316)

- [global: convert to fiber-local storage to fix exit races](https://github.com/libgit2/libgit2/pull/5314)

- [Fix copy&paste in git_cherrypick_commit docstring](https://github.com/libgit2/libgit2/pull/5315)

- [patch_parse: fix out-of-bounds reads caused by integer underflow](https://github.com/libgit2/libgit2/pull/5312)

- [tests: fix compiler warning if tracing is disabled](https://github.com/libgit2/libgit2/pull/5311)

- [tests: config: only test parsing huge file with GITTEST_INVASIVE_SPEED](https://github.com/libgit2/libgit2/pull/5313)

- [diff: complete support for git patchid](https://github.com/libgit2/libgit2/pull/5306)

- [Memory optimizations for config entries](https://github.com/libgit2/libgit2/pull/5243)

- [ssh: include sha256 host key hash when supported](https://github.com/libgit2/libgit2/pull/5307)

- [Various examples shape-ups](https://github.com/libgit2/libgit2/pull/5272)

- [Improve trace support in tests](https://github.com/libgit2/libgit2/pull/5309)

- [Move `git_off_t` to `git_object_size_t`](https://github.com/libgit2/libgit2/pull/5123)

- [Add compat typdef for git_attr_t](https://github.com/libgit2/libgit2/pull/5310)

- [CI Build Updates](https://github.com/libgit2/libgit2/pull/5308)

- [patch_parse: use paths from "---"/"+++" lines for binary patches](https://github.com/libgit2/libgit2/pull/5303)

- [Follow 308 redirect in WinHTTP transport](https://github.com/libgit2/libgit2/pull/5285)

- [fileops: correct error return on p_lstat failures when mkdir](https://github.com/libgit2/libgit2/pull/5302)

- [config_mem: implement support for snapshots](https://github.com/libgit2/libgit2/pull/5299)

- [patch_parse: fix segfault when header path contains whitespace only](https://github.com/libgit2/libgit2/pull/5298)

- [config_file: fix race when creating an iterator](https://github.com/libgit2/libgit2/pull/5282)

- [Fix crash if snapshotting a config_snapshot](https://github.com/libgit2/libgit2/pull/5293)

- [fix a bug introduced in 8a23597b](https://github.com/libgit2/libgit2/pull/5295)

- [reflogs: fix behaviour around reflogs with newlines](https://github.com/libgit2/libgit2/pull/5275)

- [commit: verify objects exist in git_commit_with_signature](https://github.com/libgit2/libgit2/pull/5289)

- [patch_parse: fixes for fuzzing errors](https://github.com/libgit2/libgit2/pull/5276)

- [apply: add GIT_APPLY_CHECK](https://github.com/libgit2/libgit2/pull/5227)

- [refs: unlock unmodified refs on transaction commit](https://github.com/libgit2/libgit2/pull/5264)

- [fuzzers: add a new fuzzer for patch parsing](https://github.com/libgit2/libgit2/pull/5269)

- [patch_parse: handle patches without extended headers](https://github.com/libgit2/libgit2/pull/5273)

- [Provide a wrapper for simple submodule clone steps](https://github.com/libgit2/libgit2/pull/4637)

- [macOS GSS Support](https://github.com/libgit2/libgit2/pull/5238)

- [cmake: correct the link stanza for CoreFoundation](https://github.com/libgit2/libgit2/pull/5265)

- [Fix file locking on POSIX OS](https://github.com/libgit2/libgit2/pull/5257)

- [cmake: update minimum CMake version to v3.5.1](https://github.com/libgit2/libgit2/pull/5260)

- [patch_parse: handle patches with new empty files](https://github.com/libgit2/libgit2/pull/5248)

- [DRY commit parsing](https://github.com/libgit2/libgit2/pull/4445)

- [azure: avoid building and testing in Docker as root](https://github.com/libgit2/libgit2/pull/5239)

- [regexp: implement a new regular expression API](https://github.com/libgit2/libgit2/pull/5226)

- [git_refdb API fixes](https://github.com/libgit2/libgit2/pull/5106)

- [Don't use enum for flags](https://github.com/libgit2/libgit2/pull/5242)

- [valgrind: suppress memory leaks in libssh2_session_handshake](https://github.com/libgit2/libgit2/pull/5240)

- [buffer: fix writes into out-of-memory buffers](https://github.com/libgit2/libgit2/pull/5232)

- [cred: add missing private header in GSSAPI block](https://github.com/libgit2/libgit2/pull/5237)

- [CMake pkg-config modulification](https://github.com/libgit2/libgit2/pull/5206)

- [Update chat resources in README.md](https://github.com/libgit2/libgit2/pull/5229)

- [Circular header splitting](https://github.com/libgit2/libgit2/pull/5223)