Add sparse arrays grant (#368)

* Add sparse arrays grant

* Update metadata

Author: jarrodmillman

content/grants/sparse_arrays/_index.md

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+---
+title: "Sparse Arrays for Scientific Python"
+summary: |
+  Project to improve sparse structures in SciPy so they support array semantics;
+  to deprecate SciPy’s sparse matrices and numpy.matrix;
+  to assist with sparse array adoption in downstream ecosystem packages.
+authors: ["Dan Schult", "Stéfan van der Walt", "K. Jarrod Millman"]
+date: 2022-11-30
+funder: Chan Zuckerberg Initiative
+funder_url: https://chanzuckerberg.com/eoss/proposals/sparse-arrays-for-scientific-python/
+status: funded
+pdf_url: https://scientific-python.org/doc/sparse-arrays-grant-2022.pdf
+---
+
+{{< page_gallery pages="./personnel" >}}
+
+Sparse data refers to datasets where a high percentage of the values are zero
+or empty, which occurs where relationships across dimensions don’t exist or are
+neglected. This project will introduce sparse array data structures that
+provide array semantics to enable straightforward interaction with sparse data.
+This includes the design and implementation of 1D and 2D sparse array data
+structures, as well as expanding on the existing scipy.sparse package.
+
+Read the [full grant](../../doc/sparse-arrays-grant-2022.pdf).

content/grants/sparse_arrays/personnel/dan_schult.md

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+---
+title: Dan Schult
+repository: https://github.com/dschult
+avatar: https://avatars.githubusercontent.com/u/915037
+---

content/grants/sparse_arrays/personnel/index.md

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+---
+headless: true
+---

content/grants/sparse_arrays/personnel/jarrod_millman.md

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+---
+title: Jarrod Millman
+repository: https://github.com/jarrodmillman
+avatar: https://avatars3.githubusercontent.com/u/123428
+---

content/grants/sparse_arrays/personnel/ross_barnowski.md

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+---
+title: Ross Barnowski
+repository: https://github.com/rossbar
+avatar: https://avatars1.githubusercontent.com/u/1268991
+---

content/grants/sparse_arrays/personnel/stefan_van_der_walt.md

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+---
+title: Stéfan van der Walt
+repository: https://github.com/stefanv
+avatar: https://avatars3.githubusercontent.com/u/45071
+---