Push down #include <ostream> to .cpp files

src/catch2/reporters/catch_reporter_automake.cpp

@@ -5,6 +5,8 @@
 
 #include <catch2/reporters/catch_reporter_automake.hpp>
 
+#include <ostream>
+
 namespace Catch {
 
     AutomakeReporter::~AutomakeReporter() {}

src/catch2/reporters/catch_reporter_bases.cpp

@@ -15,6 +15,7 @@
 #include <cstring>
 #include <cfloat>
 #include <cstdio>
+#include <ostream>
 #include <cassert>
 #include <memory>
 

src/catch2/reporters/catch_reporter_bases.hpp

@@ -16,7 +16,7 @@
 #include <cstdio>
 #include <cassert>
 #include <memory>
-#include <ostream>
+#include <iosfwd>
 
 namespace Catch {
     void prepareExpandedExpression(AssertionResult& result);

src/catch2/reporters/catch_reporter_compact.cpp

@@ -10,6 +10,8 @@
 #include <catch2/internal/catch_console_colour.hpp>
 #include <catch2/internal/catch_string_manip.hpp>
 
+#include <ostream>
+
 namespace {
 
 #ifdef CATCH_PLATFORM_MAC

src/catch2/reporters/catch_reporter_tap.cpp

@@ -8,6 +8,7 @@
 #include <catch2/internal/catch_string_manip.hpp>
 
 #include <algorithm>
+#include <ostream>
 
 namespace Catch {