Conda CI: Upgrade symengine to 0.6
cc @mattwala
This is to see if the failure of pytential!164 (closed) transfers over to sumpy. It's not quite the same experiment, as I've also updated Python to 3.7.
Edited by Isuru Fernando
cc @mattwala
This is to see if the failure of pytential!164 (closed) transfers over to sumpy. It's not quite the same experiment, as I've also updated Python to 3.7.