• Refactor DGContext to be a context manager only in Maya 2018 and above
• Add node["attr"] = {1: 0.0} for animation
• Add Plug.animate

Animate

Here's what you can do, to more easily add animation to any plug.

node = createNode("transform")
node["tx"] = {1: 0.0, 5: 1.0, 10: 0.0}
node["rx"] = {1: 0.0, 5: 1.0, 10: 0.0}
node["sx"] = {1: 0.0, 5: 1.0, 10: 0.0}
node["v"] = {1: True, 5: False, 10: True}

# Alternatively
node["v"].animate({1: False, 5: True, 10: False})

Each of which creates an appropriate curve type, e.g. animCurveTL for translateX versus animCurveTA for rotateY.