0.2.4

Changelog:

dss-deploy-scripts

• The osm submodule referenced a commit that existed on a separate branch, but was squashed into another commit on master. So when git submodule update --init --recursive ran in the tdds repo, it would fail to find the specified osm commit and error out. The change updated tdds to reference the squashed commit that contains it.
• Export IOU token address (used for chief)