[X] Implement proper operation handles that allow users to wait for specific events
[ ] Clean up the read operation for clients
[ ] Check that the corner case where read and writes go over the length of the file work correctly
[ ] Return the number of bytes read or written in the ToastyFS_Result struct
[ ] Make parallel uploads/downloads configurable
[ ] Recalculate next write locations whenever a write occurs, not at each read
[ ] avoid replay attacks
[ ] add logging (when chunk servers connect and disconnect to the metadata server)
[ ] Should list scenarios that need testing, like those where chunks would be dropped
[ ] Update DESIGN.txt and the code to remove the chunk list message. The information of chunks held by chunk servers is now transmitted to the metadata server during state updates
[ ] clean up the replication factor business
[ ] Implement metadata server WAL
[ ] Add failt injections to the simulation
[ ] Add authentication