ddml 0.2.0

• Adds support for the average treatment effect on the treated estimator.
• Adds support for local average treatment effect estimation with perfect compliance or perfect non-compliance.
• Adds support for custom ensemble weights.
• Adds article on integration with the did package.
• Adds mdl_glm wrapper for stats::glm().

ddml 0.1.0

• Initial CRAN submission.