Create CITATION.cff

Author: JeffreySarnoff

CITATION.cff

@@ -0,0 +1,18 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+identifiers:
+  - description: "A high-performance floating point type for accurate extended precision math."
+authors:
+  - given-names: Jeffrey A. Sarnoff
+    family-names: Sarnoff
+    email: [email protected]
+    affiliation: The Julia Community
+    orcid: 'https://orcid.org/0000-0001-9159-1667'
+title: "DoubleFloats.jl"
+version: 1.2.2
+type: software
+repository-code: "https://github.com/JuliaMath/DoubleFloats.jl"
+date-released: 2022-06-25
+url: "https://juliamath.github.io/DoubleFloats.jl/stable
+license: MIT
+license-url: "https://opensource.org/licenses/MIT"