Disabled coroutine debug info by default as it is fucking expensive.

source/mijin/async/coroutine.hpp

@@ -6,11 +6,7 @@
 
 
 #if !defined(MIJIN_COROUTINE_ENABLE_DEBUG_INFO)
-#if defined(MIJIN_DEBUG)
+#   define MIJIN_COROUTINE_ENABLE_DEBUG_INFO 0 // Capture stack each time a coroutine is started. Warning, expensive! // TODO: maybe implement a lighter version only storing the return address?
-#   define MIJIN_COROUTINE_ENABLE_DEBUG_INFO 1
-#else
-#   define MIJIN_COROUTINE_ENABLE_DEBUG_INFO 0
-#endif
 #endif
 
 #include <any>

source/mijin/debug/stacktrace.cpp

@@ -54,7 +54,7 @@ void backtraceErrorCallback(void* data, const char* msg, int /* errnum */)
     btData.error = msg;
 }
 
-backtrace_state* gBacktraceState = nullptr;
+thread_local backtrace_state* gBacktraceState = nullptr;
 } // namespace
 
 //