Add changelog entries for 0.4.0

Author: martin-schulze-vireso

CHANGELOG.md

@@ -3,6 +3,29 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.4.0] - 2023-08-23
+
+### Added
+
+- add aliases for `assert_*_exist`**s** (#34, #43)
+- CI: run shellcheck, fixed found issues (#51)
+- `assert_file_contains`: print regex on error (#57)
+- add `assert_file_not_contains` (#61)
+
+### Fixed
+
+- various links and typos in README.md (#28, #26, #45)
+- migrated CI scripts to Github Actions (#42)
+- make `temp_*` functions compatible with `setup_file` (#36)
+- don't require `sudo` anymore for `assert_file_owner`/`assert_not_file_owner` (#38, #50)
+- fixed internal unset variable errors with `set -u` (#33)
+- make `temp_del` work even when contents are write protected (#31)
+- parameter documentation for `assert_file_permissions` (#47)
+- tests use `bats_load_library bats-support` (#48) 
+- fix `temp_make` template to work with Alpine's `mktemp` (#52)
+- removed `temp.bash`'s executable bit (#55)
+- use new `bats_sudo` helper to avoid running `sudo` as root/when not available (#53, 54)
+- fix `assert_symlink_to` for temp files in OSX (#56)
 
 ## [0.3.0] - 2018-10-28