I was getting const errors with a recent gcc. So I removed the const modifer
to Widget::update in the 480x272 GUI. This caused menu_settings.cpp
menuSettings() to complain, because it was being passed a param called
'object' of type pointer to a const T, and then called object->update(),
which is not a const function.
However, the one call site I found to menuSettings() (menu_settings.cpp:224)
is passing currentWidget, which is of type Widget*.
* [480x272] Fix static initialization order problem with Layout, Theme, & Widget factories.
* [480x272] Fix return from drawTimerMode().
* [480x272] Remove use of macros for registered Layout, Widget, & Theme class lists; remove extern declarations (cosmetic).
* [480x272] Convert Layout and Theme registry to dynamic lists (still max. of 10 each);
Hide indicator arrow when user is at start/end of available widgets in spinner UI;
Add some sanity checking to pointer usage in screens_setup;
Add an (arbitrary) limit of 20 Widgets;
And a line break! :)
