* implement other unix file types (see the HACKING file)
* add real option handling (code from another project is
  provided in source/rvs)
* write real documentation
* implment a parent/child tree
  	* implement branch ids (NOTE: wch should be used to refer
  	  to the latest commit in a branch)
* implement tags
* owner/filepermissions/timestamps
* usernames/author