endian: add convenience typedefs for little endian sized types

endian.hpp

@@ -277,6 +277,14 @@ namespace cruft {
         }
     }
 
+    using lu16 = endian::little<u16>;
+    using lu32 = endian::little<u32>;
+    using lu64 = endian::little<u64>;
+
+    using li16 = endian::little<i16>;
+    using li32 = endian::little<i32>;
+    using li64 = endian::little<i64>;
+
     using bu16 = endian::big<u16>;
     using bu32 = endian::big<u32>;
     using bu64 = endian::big<u64>;