v12 Upgrade#3

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mhomol wants to merge 1 commit intopnp:masterfrom mhomol:v12-upgrade

+20,851-13,916

Commits on Apr 16, 2021

completed an upgrade to v12; may not be perfect, but appeared to be working as intended in initial tests; wanted to make this happen before adding anything else to it
mhomol
committed