Why did the signature of registerWidgets change?

[John-Colvin]

It broke code and doesn't really make sense any more: the only way for use the default argument is if you don't pass any widgets, in which case registerWidgets doesn't do anything. What was wrong with the old way? The only point where the name needs to be a template argument is in a pragma(msg.

[buggins]

It was an attempt to fix DMD memory consumption during CTFE