[Full Changelog](https://github.com/nodegit/nodegit/compare/v0.28.0-alpha.1...v0.28.0-alpha.2)

- Addresses crash in mwindow from libgit2

- Bumps libgit2 to bring in bug fixes

- [Bump Libgit2 to 1.1.0 (on current head of libgit2) #1831](https://github.com/nodegit/nodegit/pull/1831)

- [tree: deprecate `git_treebuilder_write_with_buffer`](https://github.com/libgit2/libgit2/pull/5815)

- [winhttp: skip certificate check if unable to send request](https://github.com/libgit2/libgit2/pull/5814)

- [commit-graph: Introduce `git_commit_graph_needs_refresh()`](https://github.com/libgit2/libgit2/pull/5764)

- [commit-graph: Support lookups of entries in a commit-graph](https://github.com/libgit2/libgit2/pull/5763)

- [merge: Check insert_head_ids error in create_virtual_base](https://github.com/libgit2/libgit2/pull/5818)

- [Check git_signature_dup failure](https://github.com/libgit2/libgit2/pull/5817)

- [Fix some typos](https://github.com/libgit2/libgit2/pull/5797)

- [include: fix typos in comments](https://github.com/libgit2/libgit2/pull/5805)

- [Fix documentation formating on repository.h](https://github.com/libgit2/libgit2/pull/5806)

- [index: Check git_vector_dup error in write_entries](https://github.com/libgit2/libgit2/pull/5801)

- [refdb_fs: Check git_sortedcache wlock/rlock errors](https://github.com/libgit2/libgit2/pull/5800)

- [Add new bindings for the R language](https://github.com/libgit2/libgit2/pull/5795)

- [Update .gitignore](https://github.com/libgit2/libgit2/pull/5787)

- [patch: add owner accessor](https://github.com/libgit2/libgit2/pull/5731)

- [commit-graph: Introduce a parser for commit-graph files](https://github.com/libgit2/libgit2/pull/5762)

- [revspec: rename git_revparse_mode_t to git_revspec_t](https://github.com/libgit2/libgit2/pull/5786)

- [mwindow: Fix a bug in the LRU window finding code](https://github.com/libgit2/libgit2/pull/5783)

- [ci: don't use ninja on macOS](https://github.com/libgit2/libgit2/pull/5780)

- [midx: Fix a bug in `git_midx_needs_refresh()`](https://github.com/libgit2/libgit2/pull/5768)

- [clone: set refs/remotes/origin/HEAD when branch is specified](https://github.com/libgit2/libgit2/pull/5775)

- [Use `p_pwrite`/`p_pread` consistently throughout the codebase](https://github.com/libgit2/libgit2/pull/5769)

- [README: instructions for using libgit2 without compiling](https://github.com/libgit2/libgit2/pull/5772)

- [Cope with empty default branch](https://github.com/libgit2/libgit2/pull/5770)

- [github-actions: Also rename the main branch here](https://github.com/libgit2/libgit2/pull/5771)

- [blob: fix name of `GIT_BLOB_FILTER_ATTRIBUTES_FROM_HEAD`](https://github.com/libgit2/libgit2/pull/5760)

- [Add documentation for git_blob_filter_options.version](https://github.com/libgit2/libgit2/pull/5759)

- [Build with NO_MMAP](https://github.com/libgit2/libgit2/pull/5583)

- [zlib: Add support for building with Chromium's zlib implementation](https://github.com/libgit2/libgit2/pull/5748)

- [Handle ipv6 addresses](https://github.com/libgit2/libgit2/pull/5741)

- [Add support for additional SSH hostkey types.](https://github.com/libgit2/libgit2/pull/5750)

- [Fix the `-DENABLE_WERROR=ON` build for gcc 10.2](https://github.com/libgit2/libgit2/pull/5749)

- [repository: use intptr_t's in the config map cache](https://github.com/libgit2/libgit2/pull/5746)

- [Add tests for `git__multiply_int64_overflow`](https://github.com/libgit2/libgit2/pull/5744)

- [Third attempt to fix the 32-bit version of `git__multiply_int64_overf…](https://github.com/libgit2/libgit2/pull/5743)

- [Avoid using `__builtin_mul_overflow` with the clang+32-bit combo](https://github.com/libgit2/libgit2/pull/5742)

- [ci: run codeql](https://github.com/libgit2/libgit2/pull/5709)

- [pack: continue zlib while we can make progress](https://github.com/libgit2/libgit2/pull/5740)

- [Re-enable the RC4 test](https://github.com/libgit2/libgit2/pull/4418)

- [Cache the parsed submodule config when diffing](https://github.com/libgit2/libgit2/pull/5727)

- [Make git__strntol64() ~70%* faster](https://github.com/libgit2/libgit2/pull/5735)

- [winhttp: support optional client cert](https://github.com/libgit2/libgit2/pull/5384)

- [git.git-authors: Replacing his/her with their](https://github.com/libgit2/libgit2/pull/5724)

- [Friendlier getting started in the lack of git_libgit2_init](https://github.com/libgit2/libgit2/pull/5578)

- [Thread-local storage: a generic internal library (with no allocations)](https://github.com/libgit2/libgit2/pull/5720)

- [Thread-free implementation](https://github.com/libgit2/libgit2/pull/5719)

- [Make the pack and mwindow implementations data-race-free](https://github.com/libgit2/libgit2/pull/5593)

- [Make the odb race-free](https://github.com/libgit2/libgit2/pull/5595)

- [Also add the raw hostkey to `git_cert_hostkey`](https://github.com/libgit2/libgit2/pull/5704)

- [Fix the `ENABLE_WERROR=ON` build in Groovy Gorilla (gcc 10.2)](https://github.com/libgit2/libgit2/pull/5715)

- [odb: Add git_odb_options](https://github.com/libgit2/libgit2/pull/5447)

- [Introduce GIT_ASSERT macros](https://github.com/libgit2/libgit2/pull/5327)

- [ci: only report main branch in README status](https://github.com/libgit2/libgit2/pull/5708)

- [ci: run coverity in the nightly builds](https://github.com/libgit2/libgit2/pull/5707)

- [ci: more GitHub Actions](https://github.com/libgit2/libgit2/pull/5706)

- [Add a ThreadSanitizer build](https://github.com/libgit2/libgit2/pull/5597)

- [msvc crtdbg -> win32 leakcheck](https://github.com/libgit2/libgit2/pull/5580)

- [Add missing worktree_dir check and test case](https://github.com/libgit2/libgit2/pull/5692)

- [Fix the `-DTHREADSAFE=OFF` build](https://github.com/libgit2/libgit2/pull/5690)

- [ci: propagate environment variables](https://github.com/libgit2/libgit2/pull/5703)

- [ci: supply a token for self-hosted runners](https://github.com/libgit2/libgit2/pull/5702)

- [ci: supply a token for self-hosted runners](https://github.com/libgit2/libgit2/pull/5701)

- [ci: GitHub Actions for arm64](https://github.com/libgit2/libgit2/pull/5700)

- [ci: stop using deprecated set-env in GitHub Actions](https://github.com/libgit2/libgit2/pull/5697)

- [Deprecate `is_valid_name` functions; replace with `name_is_valid` functions](https://github.com/libgit2/libgit2/pull/5659)

- [Include `${MBEDTLS_INCLUDE_DIR}` when compiling `crypt_mbedtls.c`](https://github.com/libgit2/libgit2/pull/5685)

- [threadstate: rename tlsdata when building w/o threads](https://github.com/libgit2/libgit2/pull/5668)

- [Refactor "global" state](https://github.com/libgit2/libgit2/pull/5546)

- [Make the Windows leak detection more robust](https://github.com/libgit2/libgit2/pull/5661)

- [Define `git___load` when building with `-DTHREADSAFE=OFF`](https://github.com/libgit2/libgit2/pull/5664)

- [ntlm: update ntlm dependency for htonll](https://github.com/libgit2/libgit2/pull/5658)

- [libgit2 v1.1.0](https://github.com/libgit2/libgit2/pull/5660)

- [Update PCRE to 8.44](https://github.com/libgit2/libgit2/pull/5649)

- [clone: update origin's HEAD](https://github.com/libgit2/libgit2/pull/5651)

- [Improve the support of atomics](https://github.com/libgit2/libgit2/pull/5594)

- [Fix error return for invalid extensions.](https://github.com/libgit2/libgit2/pull/5656)

- [Change bare free to allocator free (fixes #5653)](https://github.com/libgit2/libgit2/pull/5654)

- [midx: Introduce a parser for multi-pack-index files](https://github.com/libgit2/libgit2/pull/5401)

- [Fixed typo in comment](https://github.com/libgit2/libgit2/pull/5648)

- [Fix binary diff showing /dev/null](https://github.com/libgit2/libgit2/pull/5494)

- [httpclient: only free challenges for current_server type](https://github.com/libgit2/libgit2/pull/5576)

- [Respect `init.defaultBranch` setting](https://github.com/libgit2/libgit2/pull/5581)

- [patch_parse: handle absence of "index" header for new/deleted cases](https://github.com/libgit2/libgit2/pull/5620)

- [boolean config parsing fails in some cases with mapped values](https://github.com/libgit2/libgit2/pull/5626)

- [Fix config file parsing with multi line values containing quoted parts](https://github.com/libgit2/libgit2/pull/5629)

- [Fix release build warnings](https://github.com/libgit2/libgit2/pull/5636)

- [Fix deprecation links inside of documentation not working](https://github.com/libgit2/libgit2/pull/5631)

- [Fix typo: Make ifndef macroname the same as the define name](https://github.com/libgit2/libgit2/pull/5632)

- [diff stats: fix segfaults with new files](https://github.com/libgit2/libgit2/pull/5619)

- [WinHTTP: Try to use TLS1.3](https://github.com/libgit2/libgit2/pull/5633)

- [Fixed includes for FreeBSD](https://github.com/libgit2/libgit2/pull/5628)

- [Don't fail if a HTTP server announces he supports a protocol upgrade](https://github.com/libgit2/libgit2/pull/5624)

- [Return false instead of segfaulting when checking for default port](https://github.com/libgit2/libgit2/pull/5621)

- [deps: ntlmclient: fix htonll for Haiku](https://github.com/libgit2/libgit2/pull/5612)

- [azure: Remove job generating documentation](https://github.com/libgit2/libgit2/pull/5615)

- [Fix crash in git_describe_commit when opts are NULL.](https://github.com/libgit2/libgit2/pull/5617)

- [Fix `git_mwindow_scan_recently_used` spuriously returning true](https://github.com/libgit2/libgit2/pull/5600)

- [zstream: handle Z_BUF_ERROR appropriately in get_output_chunk](https://github.com/libgit2/libgit2/pull/5599)

- [docs: fix typo](https://github.com/libgit2/libgit2/pull/5610)