An additional graph plotting package for LightGraphs

[pitsianis]

@sbromberger please consider adding SGtSNEpi in the list of external graph visualizations in LightGraphs.jl

SGtSNEpi.jl is a high-performance software for the embedding of large, sparse graphs into a d-dimensional space (d = 1,2,3).

[sbromberger]

I'm happy to add this but any vis package that requires the adjacency matrix is not ideal for LightGraphs, since there is computational cost to generating the matrix for SimpleGraphs (SimpleWeightedGraphs are the exception.)

[codecov[bot]]

Codecov Report

Merging #1570 (90989ef) into master (5d2b80a) will not change coverage. The diff coverage is n/a.

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  Misses         31       31