PaperNotes | My notes on some Deep Learning papers | Machine Learning library

I'm using PhpStorm on a project and, often, I have to look at all the files that I've modified since the previous commit to remember what I've done.

Is there a feature that would enable to note what I've achieved without doing a commit ? I mean, I would be writing some code to debug a little thing that doesn't need any commit, add a new feature, change another little thing and then commit.

Where could I write somewhere my evolutions in the IDE ? I'd like to be able to write somewhere, like on a papernote :

1. fixed this
2. added this feature
3. changed the position of this element

And then, for my commit, I'd group all this information and summarize them in the commit message.

I know I could do it with papernotes or with a Word but I think that it'd be really nice if the JetBrains IDE offer this feature.

I hope I've been clear, if I haven't, tell me !