Squirrel.windows: --signWithParams Dual Signing

[rynz]

What's your opinion of optionally having a second --signWithParams argument to enable Dual Signing? For example:

Squirrel.exe command --signWithParams /t http://timestamp.digicert.com /sha1 XXSHA1CERTTHUMBPRINTXX --signWithParams /tr http://timestamp.digicert.com /td sha256 /fd sha256 /as /sha1 XXSHA256CERTTHUMBPRINTXX

There are quite a few Electron Packagers that would automagically inherit from this with a small modification to check for array when adding signWithParams options with --releasify etc.

[anaisbetts]

Windows 7 end-of-life is in two months, I don't think this is necessary