Fixing name lookup issue with operator<< and array_t.

adobe/array.hpp

@@ -35,6 +35,9 @@ inline void push_back(array_t& v, any_regular_t x) { v.push_back(std::move(x));
 
 #ifdef ADOBE_STD_SERIALIZATION
 
+// To be findable by ADL, the operator must be in the same namespace as `any_regular_t.`
+namespace version_1 {
+
 inline std::ostream& operator<<(std::ostream& out, const array_t& x) {
     out << begin_sequence;
 
@@ -46,6 +49,8 @@ inline std::ostream& operator<<(std::ostream& out, const array_t& x) {
     return out;
 }
 
+} // namespace version_1
+
 #endif
 
 /**************************************************************************************************/

adobe/manip.hpp

@@ -18,13 +18,6 @@
 
 #include <iostream>
 
-/*
-    REVISIT (sean-parent): As far as I can determine, this file does not use adobe/serializable.hpp
-    However, if it is not included here, the build fails for C++17 under MSVC only. I have not been
-    able to determine why this is the case.
-*/
-#include <adobe/serializable.hpp>
-
 /**************************************************************************************************/
 
 namespace adobe {