Wright's Omega Function
With Lambert's W implemented, it would be great to also have Wright's Omega function.
See http://www.orcca.on.ca/TechReports/TechReports/2000/TR-00-12.pdf for a justification (by Corless and Jeffrey) for its use, and https://people.sc.fsu.edu/~jburkardt/c_src/toms917/toms917.html for an implementation in double precision.
Why stop there? I found a solution of a certain stochastic process in terms of the Lambert W function which is almost a Wright Omega function.. the method to generate its values is the same as that to find the values of the Lambert W function.. I just left the function defined implicitly see ExponentialSelfExcitingProcesses.pdf and http://vixra.org/pdf/1211.0094v9.pdf
