Release 0.34

Perlbrew Release 0.34

perlbrew 0.34 is a maintenance release with mostly fixes

• Fix: remove duplicated items from the output of perlbrew list.
• New Command: self-install.
  • This is actually renamed from an undocumented command install-perlbrew
  • Plus it gets documented.
• Provide aditional bash completion control helper commands.
• Documentation fixes / typo corrections.
• alter MANPATHs, see GH #173