Why is Etcher 139 MB large?

• Etcher version: 1.7.1
• Operating system and architecture: Windows 10 amd64

When I downloaded Etcher, I was negatively surprised by the size of the download. For a tool that copies a file to a disk device, I would have expected 5 MB at most. On Unix-like operating systems, a simple dd if=image out=device is enough, so it shouldn't be necessary that the Windows equivalent is a million times larger.

Do you have plans to reduce the file size of the distributed binaries?