Acknowledge past CZI EOSS 1/EOSS 3 funding

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 Thank you for the support.
 
+### [2019.12/2021.9] [Chan-Zuckerberg Foundation EOSS Initiative](https://chanzuckerberg.com/eoss/)
+
+Between December 2019 and September 2021, development and maintaining of OpenBLAS was funded in part by the Chan-Zuckerberg Foundation in the context of  two grants awarded to the NumPy Foundation and managed by NumFocus (Cycles 1 and 3 of the Essential Open Source Software for Science (EOSS) Initiative of the Chan-Zuckerberg Foundation)  
+
 ### [2013.8] [Testbed for OpenBLAS project](https://www.bountysource.com/fundraisers/443-testbed-for-openblas-project)
 
 https://www.bountysource.com/fundraisers/443-testbed-for-openblas-project/pledges