Jeremy W. Murphy

OK, no worries. I'll leave this open for a while in case someone else needs the same functionality and wants to finish it off.

I just happened to notice this issue and yeah, wow, library code should _never_ call `abort()` or `exit()`, except in the guise of an assert, which the code in `graph/include/boost/graph/isomorphism.hpp`...

The implementation of the new functions looks correct... but there are no additional unit tests.

@mfuchs you need to rebase your branch.

> @jeremy-murphy, @Belcourt, any thoughts on this one? I think this is a neat extension to the classic single-source definition of Dijkstra's algorithm. There is nothing wrong with the programming...

- [ ] documentation - [ ] examples Sorry, just experimenting with this Task List feature. But also I think this feature is worth pursuing. :)

Tim, what do you think now that C++98/03 is officially deprecated in Boost? https://pdimov.github.io/articles/phasing_out_cxx03.html My personal opinion is to stop actively supporting 98/03, so if there are users who need...

Thanks for picking up these defects. I remember now when I was implementing `operator >>`, etc that it did not work using the Boost.Operator facility because I needed a new...

It would be great if you could include in this PR the unit tests that would otherwise fail without these changes , including explicit tests of the new `modulus` function.

Hmmm, I guess this begs the question as to whether non-PoD numbers (such as polynomial) should promote according to the same rules as PoDs. What do the multiprecision classes do,...