Add MSRV to Cargo.toml

jturner314 · jturner314 · commit d6b2bdc21ab2 · 2022-07-30T15:49:37.000-04:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -3,6 +3,7 @@
 name = "ndarray"
 version = "0.15.5"
 edition = "2018"
+rust-version = "1.51"
 authors = [
   "Ulrik Sverdrup \"bluss\"",
   "Jim Turner"
