Add compat for old single widgets (non-WP_Widget) #37
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The plugin currently assumes that
WP_Widgetwill be used for all widgets. This, however, is not always the case. Widgets can still be registered using an earlier API. For example: https://gist.github.com/westonruter/7141599When such an old single widget is present, a PHP notice is the result:
This prevents that from happening.
It would be even better to actually add support for single widgets, but this is better than a notice.