Hover feature

[chang803]

Hi If you could please add the hover feature, that would be great. I personally prefer the hover info displayed like the way C++ extensions show for cpp files. Things like what is the type of the variable, what are the parameters that this function need. It's very similar to what peek does, but instead of right click -> peek -> peek definition, hover can do it much easier. Not sure if ctags actually provided all these info in the tag file, but any info would be very helpful. Thanks a lot for your work!