This is release v1.3.0, "Zugunruhe". This release includes only minor new featuers that will be helpful for users to have an orderly transition to the v2.0 lineage.
## New Features
* Support custom git extensions by @ethomson in https://github.com/libgit2/libgit2/pull/6031
* Introduce `git_email_create`; deprecate `git_diff_format_email` by @ethomson in https://github.com/libgit2/libgit2/pull/6061
## Bug fixes
* #6028: Check if `threadstate->error_t.message` is not `git_buf__initbuf` before freeing. by @arroz in https://github.com/libgit2/libgit2/pull/6029
* remote: Mark `git_remote_name_is_valid` as `GIT_EXTERN` by @lhchavez in https://github.com/libgit2/libgit2/pull/6032
* Fix config parsing for multiline with multiple quoted comment chars by @basile-henry in https://github.com/libgit2/libgit2/pull/6043
* indexer: Avoid one `mmap(2)`/`munmap(2)` pair per `git_indexer_append` call by @lhchavez in https://github.com/libgit2/libgit2/pull/6039
* merge: Check file mode when resolving renames by @ccstolley in https://github.com/libgit2/libgit2/pull/6060
* Allow proxy options when connecting with a detached remote. by @lrm29 in https://github.com/libgit2/libgit2/pull/6058
* win32: allow empty environment variables by @ethomson in https://github.com/libgit2/libgit2/pull/6063
* Fixes for deprecated APIs by @ethomson in https://github.com/libgit2/libgit2/pull/6066
* filter: use a `git_oid` in filter options, not a pointer by @ethomson in https://github.com/libgit2/libgit2/pull/6067
## Code cleanups
* notes: use a buffer internally by @ethomson in https://github.com/libgit2/libgit2/pull/6047
* Fix coding style for pointer by @punkymaniac in https://github.com/libgit2/libgit2/pull/6045
* Use __typeof__ GNUC keyword for ISO C compatibility by @duncanthomson in https://github.com/libgit2/libgit2/pull/6041
* Discover libssh2 without pkg-config by @stac47 in https://github.com/libgit2/libgit2/pull/6053
* Longpath filter bug by @lrm29 in https://github.com/libgit2/libgit2/pull/6055
* Add test to ensure empty proxy env behaves like unset env by @sathieu in https://github.com/libgit2/libgit2/pull/6052
* Stdint header condition has been reverted. by @lolgear in https://github.com/libgit2/libgit2/pull/6020
* diff: update `GIT_DIFF_IGNORE_BLANK_LINES` by @ethomson in https://github.com/libgit2/libgit2/pull/6068
## CI Improvements
* ci: pull libssh2 from www.libssh2.org by @ethomson in https://github.com/libgit2/libgit2/pull/6064
## Documentation changes
* Update README.md by @shijinglu in https://github.com/libgit2/libgit2/pull/6050
## New Contributors
* @basile-henry made their first contribution in https://github.com/libgit2/libgit2/pull/6043
* @duncanthomson made their first contribution in https://github.com/libgit2/libgit2/pull/6041
* @stac47 made their first contribution in https://github.com/libgit2/libgit2/pull/6053
* @shijinglu made their first contribution in https://github.com/libgit2/libgit2/pull/6050
* @ccstolley made their first contribution in https://github.com/libgit2/libgit2/pull/6060
* @sathieu made their first contribution in https://github.com/libgit2/libgit2/pull/6052
