Incompatible with arrays

Hi Grant!

I very much enjoyed using 'tinyplot', so thanks for creating it!
But there are a few small things I've noticed.

Entering arrays works for base plot, but produces an error for tinyplot:

> x <- 1:10
> y <- array(1:10, c(1, 10))
> plot(x, y)
> tinyplot::tinyplot(x, y)
Error in .axisPars(usr, log = log, nintLog = nint) : 
  non-finite axis extents [GEPretty(-inf,inf, n=5)]
In addition: Warning messages:
1: In min(x, na.rm = na.rm) :
  no non-missing arguments to min; returning Inf
2: In max(x, na.rm = na.rm) :
  no non-missing arguments to max; returning -Inf

Making those 2 arrays a 'broadcaster' (a simple class from the 'broadcast' package) still works for base plot, but produces a different error for tinyplot:

> broadcaster(x) <- broadcaster(y) <- TRUE
> plot(x, y)
> tinyplot::tinyplot(x, y)
Error in `[.default`(xj, i, , drop = FALSE) : subscript out of bounds

Is tinyplot incompatible with arrays? If so, perhaps this can be made more clear in the error message.

Kind regards,

Tony

Start by reproducing the reported array and broadcaster examples through tinyplot::tinyplot(x, y), comparing them with base plot(x, y). Trace the handling of array-like inputs and the resulting errors; done means the inputs work correctly or produce a clear, intentional compatibility error.