`LSUP_REPO`: Simple road map

P: Pending; W: working on it; T: testing; D: done

General repo
- D Initialize and tear down
- D Environment assets
D-RES
- D Create
- D Store
- W Modify
- W Update (delta)
- W Retrieve from store
- P Versioning
- Create version
- Version listing and info
- Retrieve version
- Revert to version
- Squash versions (range)
- P Deletion
- Bury (tombstone)
- Exhume (from any version)
- Cremate (hard delete)
- P Data structures
- Proxies
- Sets
- Linked lists
P O-RES
- Store
- Metadata (O-RES) linking
- Versioning (see above)
- Deletion (see above)
- Versioning (see above)
W Tests
P Python bindings