Make SOS-tools available in grass-addons

[ninsbl]

Would be good to see those tools in https://github.com/OSGeo/grass-addons/tree/master/grass7

This may require some changes for Python 3?

[pesekon2]

Uf. Yes, true. I remember I wanted to solve one issue somewhere and then push it to the official repository.

Well, as now I should also rewrite it to Python 3, maybe it's finally the right time to do that.

[pesekon2]

Issue #44 opened for the part of Python 3.

[pesekon2]

I remember I wanted to solve one issue somewhere and then push it to the official repository.

The blocking issue is #46. After solving that one, the modules could be made available in the official GRASS GIS AddOns repo.

[pesekon2]

Although there is still a lot of things to improve, I have solved all the blocking issues. Shall I move it to the official AddOns repository? How am I supposed to do it when there is a library needed for modules going into different directories (v.*, r.*, t.*)?

Also, I think that I will keep a schizophrenic way of keeping this repo alive with all minor issues and proposals in parallel to the official GRASS AddOns repo. I hope it's fine, although not very systematic.

@ninsbl: Don't you use these modules in some processing chains to test everything? I have tested everything in a dummy manual way, but to be sure that something hidden didn't get broken.