[tasks] Update tasks.md
* [x] Thanks to a generous contribution it's mostly done and well on the way
* [ ] Push it towards 1.0
* [ ] `Config` type which integrates multiple files into one interface, much like a *multi* version of `File`
- * [ ] Make `gix organize` use `git-config` on single files (the repository configuration)
+ * [x] Make `gix organize` use `git-config` on single files (the repository configuration)
* **git-ref**
* [ ] create ref pointing to ID
* _assure to keep the path towards symbolic refs open, and allow specifying if these should be followed or not_
