New ... Now that python 3.x is 8 years old, it became obvious that Continuum would update their package distribution.
I have just started playing with doing non-Arc*ish stuff for now since only the 3.4 3.6 distribution is officially supported in ArcGIS PRO. I was pleasantly surprised to see one of my old-time favourite IDEs back ... Pythonwin ... by Mark Hammond.
Mix a little Spyder, 'win and Jupyter console across multiple screens working on separate things and they all behaved nice.
I will post more as I find it... but for now, here are they are... (pycharm and others will join the play group when I have time).