This was done with:
find docs/ include/ language/ modules/ src/ *.* Config -exec sed -i 's/-20.. Anope Team/-2019 Anope Team/i' {} \;

This was done with:
find docs/ include/ language/ modules/ src/ *.* Config -exec sed -i 's/-20.. Anope Team/-2018 Anope Team/i' {} \;