Scientific formatter fails for very small numbers

[rakhusur]

plot(x -> 1e-20*sin(x), ylims = (-1e-20, 1e-20), yformatter = :scientific)

produces

With an exponent of -10, everything works fine. This happens on all backends and using yformatter = string gives correct results, so the problem seems to be in the scientific formatter.

[mkborregaard]

I believe this error is in Showoff.jl - ticks are required to fit in a Float32

[briochemc]

Maybe this would be solved by JuliaGraphics/Showoff.jl#19?

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[EDIT] Yes, that PR/branch worked for me

With the current release:

With the PR/branch: