document strong zero property of false

[tpapp]

Trivial docs change documenting the "strong zero" property of false.

This comes up from time to time, eg

#19168 (comment)
https://discourse.julialang.org/t/about-nan-0-0-and-false/34272/
https://discourse.julialang.org/t/inconsistency-of-nan/28671

so this should clear up some of the confusion. Thanks @mschauer for the reference.

[tpapp]

Should the docstring of * refer to this, perhaps made a subsubsection?

[mschauer]

It is also mentioned here

julia/base/docs/basedocs.jl

Line 1542 in 5315476

Moreover, `false` acts as a multiplicative "strong zero":

[tpapp]

Then maybe the docstring of * could just mention it and direct the reader to Bool?

[ViralBShah]

I'd like to merge this. Any objections? @JeffBezanson @StefanKarpinski

[mschauer]

Oh, history by the way: Knuth's paper was uploaded on arXiv

[v1] Fri, 1 May 1992 00:00:00 UTC (25 KB)

I only found a picture of two years later:

The arxiv pirate logo still survives as favicon.