Added a roadmap to the readme. (#90)

Also, added a few useful notes to the contrib guide.

Author: alxmrs

CONTRIBUTING.md

@@ -28,8 +28,8 @@ appreciate your help. A few things to keep in mind:
 - Every contribution, big or small, matters and deserves credit. 
 
 Here are a few requests for your development process:
-- We require all code to be formatted with `pyink`. 
+- We require all code to be formatted with `pyink` (i.e., please run `uvx pyink .`). 
 - Please include unit tests, if possible, and performance tests when you touch the core functionality (see `perf_tests/`).
 - It's polite to do a self review before asking for one from a maintainer. Don't stress if you forget; we all do sometimes.
-- Please add (or update) documentation when adding new code. We use Google Style docstrings.
+- Please add (or update) documentation when adding new code. We use [Google Style docstrings](https://sphinxcontrib-napoleon.readthedocs.io/en/latest/example_google.html).
 - We are thrilled to get documentation-only PRs -- especially spelling and typo fixes (I am a bad speller). If writing tutorials excites you, it would be to everyone's benefit.

README.md

@@ -143,6 +143,15 @@ _2025 update_: Something like this is being built across a few projects! The one
 As of writing, this project is [amid integrating](https://github.com/alxmrs/xarray-sql/pull/69) a
 rust-based DataFusion backend provided by arrow-zarr.
 
+## Roadmap
+
+- [ ] [@RohanDisa](https://github.com/RohanDisa) DataFusion Interoperability via the Python Dataframe Protocol [#86](https://github.com/alxmrs/xarray-sql/issues/86).
+- [ ] Translate a single Zarr to a collection of tables via DataFusion's catalog interface [#85](https://github.com/alxmrs/xarray-sql/issues/85).
+- [ ] Distributed beyond a single node through the DataFusion integration with Ray Datasets [#68](https://github.com/alxmrs/xarray-sql/issues/68).
+- [ ] Demo: calculate Sea Surface Temperature from 1940 - Present in SQL [#36](https://github.com/alxmrs/xarray-sql/issues/36).
+- [ ] Provide an option to integrate DataFusion directly to Zarr via Rust [#4](https://github.com/alxmrs/xarray-sql/issues/4).
+- [ ] (To be formally announced eventually): The 100 Trillion Row Challenge [#34](https://github.com/alxmrs/xarray-sql/issues/34).
+
 ## Sponsors & Contributors
 
 I want to give a special thanks to the following folks and institutions: