1.4.0

What's Changed

Lazily load YAML by @deivid-rodriguez in https://github.com/rails/thor/pull/892
Fix encoding error when trying to show a diff: by @Edouard-chin in https://github.com/rails/thor/pull/898
fix: Unsafe shell command constructed from library input by @odaysec in https://github.com/rails/thor/pull/897
Use git difftool for merge.tool identifiers by @moguls753 in https://github.com/rails/thor/pull/900
feat: support gsub_file erroring if gsub doesn't change anything, and add gsub_file! by @G-Rath in https://github.com/rails/thor/pull/877

@hlascelles made their first contribution in https://github.com/rails/thor/pull/893
@Edouard-chin made their first contribution in https://github.com/rails/thor/pull/898
@odaysec made their first contribution in https://github.com/rails/thor/pull/897
@moguls753 made their first contribution in https://github.com/rails/thor/pull/900
@G-Rath made their first contribution in https://github.com/rails/thor/pull/877
@Uaitt made their first contribution in https://github.com/rails/thor/pull/891

Full Changelog: https://github.com/rails/thor/compare/v1.3.2...v1.4.0