Plot Blobs

Plotting method for objects inheriting from class blob.

# S3 method for blob
plot(x, col = "red", asp = 1, ...)

Arguments

x	A `blob` object.
col	The color of the `blob` center and box (default: "red").
asp	The y/x aspect ratio of the plotting window (default: 1).
...	Additional arguments to be passed to `plot`.

# TODO