- install two identical binaries: jbuilder and dune
- rename the man pages to dune-*
- change the name in man pages
- change the name of libraries
- add support for dune-project files and add a dune-project file
- add support for dune-workspace files
- start updating the manual
- update the tests
(executable ...) is easier to use where there is a single executable.
Also add a (package ...) and (public_name <name>)/(public_names
(<names)) to executable/executables stanzas, to make it easier to
install executables.
Closes#33