New upstream version 1.6.0

.github/PULL_REQUEST_TEMPLATE.md

.github/workflows/Vagrantfile.debian6

.github/workflows/build.yml

.github/workflows/staticcheck.yml

.github/workflows/test.yml

.gitignore

AUTHORS

CHANGELOG.md

CONTRIBUTING.md

LICENSE

README.md

backend_fen.go

backend_inotify.go

backend_inotify_test.go

backend_kqueue.go

backend_kqueue_test.go

backend_other.go

backend_windows.go

backend_windows_test.go

cmd/fsnotify/dedup.go