Add missing KERNEL_FLOAT_INLINE on for_each

Author: stijnh

include/kernel_float/iterate.h

@@ -18,7 +18,7 @@ namespace kernel_float {
  * ```
  */
 template<typename V, typename F>
-void for_each(V&& input, F fun) {
+KERNEL_FLOAT_INLINE void for_each(V&& input, F fun) {
     auto storage = into_vector_storage(input);
 
 #pragma unroll
@@ -315,4 +315,4 @@ KERNEL_FLOAT_INLINE select_type<V, Is...> select(const V& input, const Is&... in
 
 }  // namespace kernel_float
 
-#endif
+#endif