Sync version of sign?

[petertorelli]

Thanks for creating this simple, compact, easy-to-use library. Any chance you could make a Sync version of sign to avoid promises?

[paulmillr]

Not really a goal for now, we've been audited, would require a new audit etc.

[petertorelli]

Gotcha, thanks!

[paulmillr]

actually i've went ahead and added this.

[petertorelli]

Cool, thanks!