> checkModified

$ copy-file changes/Bar.md base/Bar.md

> checkModified

$ copy-file changes/Foo-bad.txt base/Foo.txt

-> checkModified

-> checkModified

$ copy-file changes/Foo.txt base/Foo.txt

> checkModified

> checkRemoved

$ delete base/Bar.md

> checkRemoved

> checkAdded

$ copy-file original/Bar.md base/Bar.md

> checkAdded
