When the table is made:
- Load file to table if file exists.
- ELSE still create table but error message in status that file doesn't exist.
- If this hash table gets closed, save to filename.
- If 2nd parameter is not a number, then table is default size and 2nd parameter is treated as file path.
Maybe don't auto save if table is closed by script command /hfree, but save if disconnected or exit, etc.
