Bump version.

maleadt · web-flow · commit 8e1bde0ee96b · 2021-05-06T12:26:20.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -1,6 +1,6 @@
 name = "GPUArrays"
 uuid = "0c68f7d7-f131-5f86-a1c3-88cf8149b2d7"
-version = "6.3.0"
+version = "6.4.0"
 
 [deps]
 AbstractFFTs = "621f4979-c628-5d54-868e-fcf4e3e8185c"
