brush settings reset button, hook crash handler on every thread, update changelog

src/app.cpp

@@ -401,7 +401,7 @@ void App::init()
             LOG("OPENGL: %.*s", length, message);
             FlushConsoleInputBuffer(GetStdHandle(STD_OUTPUT_HANDLE));
             SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), info.wAttributes);
-#ifdef _WIN32
+#ifdef _WIN32 && _DEBUG
             if (severity == GL_DEBUG_SEVERITY_HIGH)
                 __debugbreak();
 #endif
@@ -960,6 +960,7 @@ void App::rec_export(std::string path)
 
 void App::rec_loop()
 {
+    BT_SetTerminate();
     rec_running = true;
     while(rec_running)
     {