Clarification of CatQueue implementation

[matthewleon]

The code for CatQueue cites Okasaki, 1995:

purescript-catenable-lists/src/Data/CatQueue.purs

Line 8 in da5091b

-- | See [Simple and Efficient Purely Functional Queues and Dequeues](http://www.westpoint.edu/eecs/SiteAssets/SitePages/Faculty%20Publication%20Documents/Okasaki/jfp95queue.pdf) (Okasaki 1995)

This is a bit puzzling, as the actual implementation is not the lazy-list based one proposed in that paper, but rather the more "traditional" implementation that Okasaki attributes to other authors:

The standard trick, reinvented many times (Hood and Melville, 1981; Gries, 1981;
Burton, 1982), is to represent the queue as a pair of lists hL, Ri where L is the front
portion of the queue and R is the rear portion of the queue in reverse order...

Perhaps it is worth amending that comment?