Update Wasmer, log load times, some minor performance tweaks

src/utils/string_key.rs

@@ -129,10 +129,13 @@ impl ValueIdentifiable for StringKey {
     }
 }
 
+/// The difference in ascii characters to translate from uppercase to lowercase.
+const CAPITAL_DIFF: u8 = b'a' - b'A';
+
 /// Converts a character to lowercased in a const safe way.
 const fn to_lower(c: u8) -> u8 {
     if c >= b'A' && c <= b'Z' {
-        return c + (b'a' - b'A');
+        return c + CAPITAL_DIFF;
     }
     c
 }