unify help and completion of REPL - previously they were not in sync, now it is one lookup table
Merge pull request #232 from hannesm/unify-help-and-completion

unify help and completion of REPL - previously they were not in sync, no...
Merge remote-tracking branch 'upstream/master' into providers
Add basic infrastructure for IO support in the interpreter
Basics of command to execute IO actions in the interpreter