- **vfile.mhash** field: this was added sometime after the lib took a break and needs to be populated/handled by the lib code.

- **Port over checkout/repo fingerprint**: this allows detection of when a checkout's repo has been replaced by one with different RIDs. See fossil's `vfile.c:vfile_rid_renumbering_event()`.

- **Merging**: to port from fossil.

- **Rebuild**: this feature exercises almost every major SCM feature of the framework except for merging and synchronization. Similarly, deconstruct/reconstruct might be useful for exercising the library.
- **Rebuild**: this feature exercises almost every major SCM feature of the framework except for merging and synchronization. Similarly, deconstruct/reconstruct might be useful for exercising the library. With the exception of missing ticket crosslinking, we have all of the pieces needed to implement this, and the `f-parseparty` test app does much of this work already.

- **Cross-linking of tickets**: the library can read and write them but they cannot yet be crosslinked. Currently, depending on a context-dependent flag, it may error out if it tries to crosslink one or it may silently skip over it.

- **Double-check crosslinking of other types** and make sure that we are not missing newly-added features.

- **Bring the configuration-related state up to date.** The infrastructure is there but the exact list of fossil-supported properties is lagging behind by several years.