v1.1.0-u1

hence the original repo hasn't been maintained for a while and my PR is stale (summerwind#5), releasing it here

Changelog

• summerwind#4 latest (1.7) Packer API & SDK support;
• summerwind#3 DownloadDir support;
  & built with Go 1.17.3 on linux/amd64.

DISCLAIMER: no warranties, comes as-is and use at your own risk; consider compiling your own binaries!