Summary of changes

• Turn on GIT_USE_NSEC on all platforms
• Use Iconv on OSX for better internationalization support.
• Bump libgit2 to bring in:
  • NTLM proxy support
  • Negotiate/Kerberos proxy support
  • Various git config fixes
  • Various git ignore fixes
  • Various libgit2 performance improvements
  • Windows/Linux now use PCRE for regex, OSX uses regcomp_l, this should address collation issues in diffing
• Fixed bug with Repository.prototype.refreshReferences dying on corrupted reference. We now ignore corrupted references

Merged PRs into NodeGit

• refresh_references.cc: skip refs that can't be directly resolved #1689
• Bump libgit2 to fork of latest master #1690

Merged PRs into LibGit2

• errors: use lowercase
• largefile tests: only write 2GB on 32-bit platforms
• Fix broken link in README
• net: remove unused git_headlist_cb
• cmake: default NTLM client to off if no HTTPS support
• attr: rename constants and macros for consistency
• Change API instances of fromnoun to from_noun (with an underscore)
• object: rename git_object__size to git_object_size
• Replace fnmatch with wildmatch
• Documentation fixes
• Removal of p_fallocate
• Modularize our TLS & hash detection
• tests: merge::analysis: use test variants to avoid duplicated test suites
• Rename options initialization functions
• deps: ntlmclient: disable implicit fallthrough warnings
• gitignore with escapes
• Handle URLs with a colon after host but no port
• Merge analysis support for bare repos
• Add memleak check docs
• Data-driven tests
• sha1dc: update to fix endianess issues on AIX/HP-UX
• Add NTLM support for HTTP(s) servers and proxies
• Callback type names should be suffixed with _cb
• tests: checkout: fix symlink.git being created outside of sandbox
• ignore: handle escaped trailing whitespace
• Ignore: only treat one leading slash as a root identifier
• online tests: use gitlab for auth failures
• Ignore files: don't ignore whitespace
• cache: fix cache eviction using deallocated key
• SECURITY.md: split out security-relevant bits from readme
• Restore NetBSD support
• repository: fix garbage return value
• cmake: disable fallthrough warnings for PCRE
• Configuration parsing: validate section headers with quotes
• Loosen restriction on wildcard "*" refspecs
• Use PCRE for our fallback regex engine when regcomp_l is unavailable
• Remote URL last-chance resolution
• Skip UTF8 BOM in ignore files
• We've already added ZLIB_LIBRARIES to LIBGIT2_LIBS so don't also add the z library
• Define SYMBOLIC_LINK_FLAG_DIRECTORY if required
• Support symlinks for directories in win32
• rebase: orig_head and onto accessors
• cmake: correctly detect if system provides regcomp
• Correctly write to missing locked global config
• [RFC] util: introduce GIT_DOWNCAST macro
• examples: implement SSH authentication
• git_repository_init: stop traversing at windows root
• config_file: check result of git_array_alloc
• patch_parse.c: Handle CRLF in parse_header_start
• fix typo
• sha1: don't inline git_hash_global_init for win32
• ignore: treat paths with trailing "/" as directories
• Test that largefiles can be read through the tree API
• Tests for symlinked user config
• patch_parse: fix parsing addition/deletion of file with space
• Optimize string comparisons
• Negation of subdir ignore causes other subdirs to be unignored
• xdiff: fix typo
• docs: clarify relation of safe and forced checkout strategy
• Each hash implementation should define git_hash_global_init
• [Doc] Update URL to git2-rs
• remote: Rename git_remote_completion_type to _t
• odb: provide a free function for custom backends
• Have git_branch_lookup accept GIT_BRANCH_ALL
• Rename git_transfer_progress to git_indexer_progress
• High-level map APIs
• refdb_fs: fix loose/packed refs lookup racing with repacks
• Allocator restructuring
• cache: fix misnaming of git_cache_free
• examples: produce single cgit2 binary
• Remove public 'inttypes.h' header
• Prevent reading out of bounds memory
• Fix a memory leak in odb_otype_fast()
• Make stdalloc__reallocarray call stdalloc__realloc
• Remove git_time_monotonic
• Fix a very improbable memory leak in git_odb_new()
• ci: publish documentation on merge
• Enable creation of worktree from bare repo's default branch
• Allow bypassing check for '.keep' file
• Release v0.28.1