Done, should be stable, needs some more user testing:
Major new feature: context-sensitive ("comd" grammar) readline custom completion of built_ins, aliases, a number of predefined UNIX commands and some custom completion for some UNIX commands: git, apt-get, make, jsh, ...
Makefile now automatically builds a version string, containing info of the machine + added a 'release' make target for making releases with a release version string
I also partially started the source code re-organizing into cohesive modules, as discussed in issue #46
Done, should be stable, needs some more user testing: