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

src/app_cloud.cpp

@@ -21,6 +21,7 @@ void App::cloud_upload()
     else
     {
         auto upload_thread = [this] {
+            BT_SetTerminate();
             if (Canvas::I->m_unsaved)
             {
                 Canvas::I->project_save_thread(doc_path);
@@ -74,6 +75,7 @@ void App::cloud_upload()
 void App::cloud_upload_all()
 {
     std::thread([this] {
+        BT_SetTerminate();
         auto names = Asset::list_files(data_path, ".*\\.ppi");
 
         gl_state gl;
@@ -140,6 +142,7 @@ void App::cloud_browse()
             return;
         dialog->destroy();
         std::thread([this, dialog] {
+            BT_SetTerminate();
             async_start();
             auto* m = layout[main_id]->add_child<NodeMessageBox>();
             m->m_title->set_text("Downloading");