Merge branch 'develop' of https://github.com/beru/nana into beru-develop

Conflicts:
	source/gui/widgets/skeletons/text_editor.cpp
	source/gui/widgets/textbox.cpp
	source/paint/detail/image_bmp.hpp
	source/paint/detail/image_ico.hpp

source/gui/detail/win32/bedrock.cpp

@@ -1413,6 +1413,7 @@ namespace detail
 							auto tstop_wd = brock.wd_manager.tabstop(msgwnd, is_forward);
 							if (tstop_wd)
 							{
+								root_runtime->condition.tabstop_focus_changed = true;
 								brock.wd_manager.set_focus(tstop_wd, false);
 								brock.wd_manager.do_lazy_refresh(msgwnd, false);
 								brock.wd_manager.do_lazy_refresh(tstop_wd, true);