Tending packages in dub registry

[aberba]

Currently, the dub registry shows the most popular packages which 
pretty much always stays same...probably some are used as 
dependencies in other popular libs, raising their download count 
(which I believe is or is part of what's used for the ranking).

That alone is not very useful , I think I would like to see 
something like trending packages... to get a sense of what people 
are using as a first sign when choosing a package in the dub 
registry.. or yet still, allow us to see sort/see other/all 
packages based on popularity.