Add meeting notes for 2023-01-23

Guess we do have branch protections!

minutes/2023-01-23.md

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+tags: meeting
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+# 2023-01-23: graphblas binsparse meeting 
+
+*Attendees: Willow Ahrens, Jim Kitchen, Benjamin Brock, Erik Welch, Isaac Virshup*
+
+## Agenda
+
+* Recap of hdf5 pains (Ben)
+* Zarr conventions (Isaac) (https://github.com/zarr-developers/zeps/pull/28)
+* 2.0 plan (Willow + Erik)
+* May scientific python meeting (Isaac) (https://scientific-python.org/summits/developer/2023/)
+
+## Notes
+
+* hdf5 pains
+    * Figuring out what dtypes are present in an HDF5 dataset
+    * 
+* C structure (from last meeting) – [link](https://github.com/GraphBLAS/binsparse-reference-impl/blob/main/include/binsparse/c_bindings/binsparse_matrix.h)
+* 2.0
+    * "Bundled" levels: https://mybinder.org/v2/gh/GraphBLAS/binsparse-specification/main?filepath=sparsetensorviz/notebooks/Example_Rank4-bundled.ipynb
+    * Discussion: https://github.com/GraphBLAS/binsparse-reference-impl/pull/1
+* v1
+    * What does the in memory implementation need to do?
+    * Could we go for a fairly simple file format, npz
+    * If high level, should we define a structure that isn't used?
+        * E.g. MLIR, TACO – and are these optimizing for the same thing
+        * Willow: they are all using the same buffers
+            * Maybe not 1-indexed languages, but basically the same
+* TODO
+    * Move from design docs to spec
+    * Willow can follow up on interoprability with Finch
+    * NASA Grant
+        * https://science.nasa.gov/researchers/solicitations/roses-2022/amendment-73-f15-high-priority-open-source-science-final-text
+        * https://nspires.nasaprs.com/external/viewrepositorydocument/cmdocumentid=860825/solicitationId=%7BB364DBB8-390B-744D-013F-8F4C304B9A63%7D/viewSolicitationDocument=1/F.15%20HPOSS_Amend73.pdf