Delighted with this. I've been working on and off on a shortest-path routing engine in Crystal. Parallelism means I can get performance on a par with C++ even o

Delighted with this. I've been working on and off on a shortest-path routing engine in Crystal. Parallelism means I can get performance on a par with C++ even on large graphs, but with the simplicity and readability of Ruby. Full marks to the Crystal devs for tackling the no 1 feature request.