Micro v2.0.6

• Improvements to the backup system.
  • permbackup option (default off).
  • backdupdir option (default directory is ~/.config/micro/backups).
• Some new statusformat directives for the statusline:
  • status.lines, status.vcol, status.bytes, status.size.
• Errors parsing settings.json will not cause settings to be overwritten.
• Bug fixes.
  • Pasting CRLF text.
  • Plugin options not persisting properly.
  • Backspace on Windows.
  • Better test infrastructure.