A little usability improvement and many bug fixes

• Improvement
  • Supports multiple renames #313
  • Add __zplug::utils::awk::ltsv function (see #348)
  • Restore monitor option to the default when calling load command #341
  • completion file
    • trim @ symbol
    • organize completion text
  • Add some new options to list command
    • for more info #331
  • Add --self-manage
    • #311, #325
• Bug fixes
  • detached HEAD error
  • bad pattern error if set globsubst