Code definition preview/link in-browser feature
Problem to solve
I feel it would help people reading the code understand it a lot easier and faster, without the need to fetch the repo and open it in a desktop IDE.
Intended users
EVERYONE!!!
Proposal
I would like to be able to mouseover a particular function/class in the code on Gitlab, and have the mouseover give me the function's docstring (or declaration, depending on the language), with option to click and open the source declaring that function in a new/same tab. There could be a button that turns this (IDE functionality) feature.