We're working on that through Kaggle Datasets https://www.kaggle.com/datasets
We support data versioning, interactive web previews, seamless loading into hosted Jupyter notebooks (Kaggle Kernels), seeing/sharing analytic results built on the data version, and adding direct collaborators right now.
We don't support a data-oriented version of an "issue" or a "pull request" quite yet, but these needs are definitely on our radar.