Log Message:
This release fixes some bugs, add some features.
  Bug fix: bug with arg is NULL in client_tag
  Bug fix: check for value in tag_toggleview
  Bug fix: handle client_toggletag with no arg or with arg > ntags
  Bug fix: awesome-client exits with a meaningfull value
  Bug fix: fix compilation for GNU/Hurd
  Bug fix: changing screen focus restore last focused client
  Bug fix: fix segmentation fault with configuration parser
  Bug fix: fix rules handling in some corner cases
  New feature: client_zoom on master window swap with next window
  New feature: add a screen padding feature