gnu: julia-bfloat16s: Update to 0.4.0.

* gnu/packages/julia-xyz.scm (julia-bfloat16s): Update to 0.4.0.

gnu/packages/julia-xyz.scm

@@ -365,21 +365,18 @@ benchmarks as well as comparing benchmark results.")
     (license license:expat)))
 
 (define-public julia-bfloat16s
-  ;; Not tagged upstream
-  (let ((commit "ef6051e4308ed0c02f10168b99d226237e0ae33c")
-        (version "0.2.0"))
   (package
     (name "julia-bfloat16s")
-      (version version)
+    (version "0.4.0")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://github.com/JuliaMath/BFloat16s.jl")
-               (commit commit)))
+             (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-          (base32 "16sr578k4i47lhziri47nvspdrsni2wc1qjhs6hzffh9si6a7jfq"))))
+        (base32 "12d5dv5jy8vphczlbnks0qa6wmlz0czxq7gc48bcb94f9qvq0r1n"))))
     (build-system julia-build-system)
     (home-page "https://github.com/JuliaMath/BFloat16s.jl")
     (synopsis "Define BFloat16 data type")
@@ -390,7 +387,7 @@ would cause precision problems for any particular algorithm, even without
 access to TPU hardware.  Note that this package is designed for functionality,
 not performance, so this package should be used for precision experiments
 only, not performance experiments.")
-      (license license:expat))))
+    (license license:expat)))
 
 (define-public julia-bioalignments
   (package