update news + fix strip + opt-level3 argminmax

NEWS.md

@@ -3,6 +3,13 @@
 ## What's changed
 
 - New string method `to_titlecase()` (#371).
+- Subnamespace name "arr" as in  `<Expr>$arr$` & `<Series>$arr$` is deprecated in favor of "list". 
+  Finally at polars 0.9.0 the "arr" will be removed (#375).
+- Polars github release now includes cross-compiled binary for Mac Arm CPUs (aarch-apple-darwin).
+  See installation instructions in README.md. (#377)
+- Bugfix: Although stated in news for PR (#334) `strip = true` was not actually set for the 
+  "release-optimized" compilation profile. Now it is. This and `lto="fat"` give smaller binaries
+  (#377).
 
 # polars 0.8.0
 

src/rust/Cargo.toml

@@ -22,15 +22,14 @@ mimalloc = { version = "0.1.34", default-features = false }
 [target.'cfg(all(target_os = "linux", not(use_mimalloc)))'.dependencies]
 jemallocator = { version = "0.5.0", features = ["disable_initial_exec_tls"] }
 
-
-# use opt-level = 1 for argminmax package unless profile is profile.release-optimized to support Rust < 1.66
 [profile.release-optimized]
 inherits = "release"
 codegen-units = 1
 lto = "fat"
+strip = true
 
 [profile.release.package.argminmax]
-opt-level = 1
+opt-level = 3 # was 1 to support 1.66, but since 1.70 is needed anyway it does not matter anymore
 [profile.release-optimized.package.argminmax]
 opt-level = 3