Added

• add aliases for assert_*_exists (#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)