Offer tar.gz release for 1.0.1

[mtlynch]

All previous releases served the Linux binary as a .tar.gz file, but the 1.0.1 switched to a .zip file. Can we have a .tar.gz file as well? Switching formats for different releases breaks install scripts (like mine).

If .zip is the new permanent format, I can update my script to work with that, but it'd be nice for Sia to use consistent file formats for the releases.

[lukechampine]

.zip is the new permanent format, because our auto-update code expects a zip archive. Apologies for the inconvenience

[DavidVorick]

Sorry to break compatibility. There will probably be a few more compatibility bumps in the future, but we're trying to preserve compatibility as much as possible.

I definitely appreciate you making the issue, it's good to see what things we are accidentally breaking.