Connection: Remove <iostream> include

Avoids injecting a static constructor into translation units including
this source file, even if nothing in the source file uses the iostream
facilities.

Instead, we can replace this with an ostream include. While we're at it,
we can make sure we include everything necessary within the source file.

hecl/include/hecl/Blender/Connection.hpp

@@ -13,25 +13,29 @@
 #endif
 
 #include <array>
+#include <atomic>
+#include <cstddef>
 #include <cstdint>
 #include <cstdio>
-#include <cfloat>
-#include <string>
 #include <functional>
-#include <iostream>
+#include <memory>
+#include <optional>
+#include <ostream>
+#include <string>
 #include <unordered_map>
-#include <atomic>
+#include <utility>
 #include <variant>
+#include <vector>
 
 #include "hecl/hecl.hpp"
+#include "hecl/Backend.hpp"
 #include "hecl/HMDLMeta.hpp"
 #include "hecl/TypedVariant.hpp"
-#include "hecl/Backend.hpp"
-#include "athena/Types.hpp"
-#include "athena/MemoryWriter.hpp"
-#include <optional>
-#include "Token.hpp"
+
+#include <athena/Types.hpp>
 #include <fmt/ostream.h>
+#include <logvisor/logvisor.hpp>
+#include <xxhash/xxhash.h>
 
 namespace hecl::blender {
 using namespace std::literals;

hecl/lib/Blender/Connection.cpp

@@ -1,5 +1,6 @@
 #include <algorithm>
 #include <cerrno>
+#include <cfloat>
 #include <chrono>
 #include <cinttypes>
 #include <csignal>
@@ -15,9 +16,11 @@
 #include <hecl/hecl.hpp>
 #include <hecl/Database.hpp>
 #include "hecl/Blender/Connection.hpp"
+#include "hecl/Blender/Token.hpp"
 #include "hecl/SteamFinder.hpp"
 #include "MeshOptimizer.hpp"
 
+#include <athena/MemoryWriter.hpp>
 #include <logvisor/logvisor.hpp>
 
 #if _WIN32

hecl/lib/Blender/HMDL.cpp

@@ -1,6 +1,9 @@
 #include "hecl/Blender/Connection.hpp"
-#include <cmath>
+
 #include <cfloat>
+#include <cmath>
+
+#include <athena/MemoryWriter.hpp>
 
 #undef min
 #undef max