random boolean matrices

Hi,
I have been working on a package (not yet on github) to generate random `Matrix{Bool}`s, given fixed row sums or column sums or both (see e.g. http://projecteuclid.org/euclid.aos/1375362560 for some of the mathematics I'd like to incorporate). Is this type of functionality already available in RandomMatrices?

Thanks!

Start by reviewing the current RandomMatrices.jl API to determine whether random Boolean matrices are already supported. If not, define the requested behavior for fixed row sums, column sums, or both, using the linked paper as mathematical background; done should include a decided API and validation of the resulting matrices.

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