feat: set portable as default

Author: petscheit

Cargo.toml

@@ -25,7 +25,7 @@ rustc-hex = "2"
 wasm-bindgen-test = "0.3.33"
 
 [features]
-default = ["zero_hash_cache", "ring"]
+default = ["zero_hash_cache", "portable"]
 zero_hash_cache = []
 ring = ["dep:ring"]
 portable = ["dep:sha2"]