Convert mailbox from maildir format to mbox format, with support for nested folders

Improvements by Philippe Fremy:

• porting to Python 3 to deal with filesystem encoding problems: works when moving maildir data from a partition supporting utf8 filenames (Ext3) to a partition supporting mbcs filenames (ntfs)
• argument handling and help display
• add support for nested directories
• move to GitHub

• either download directly the maildir2mbox.py file and execute it:

   $ python maildir2mbox.py --help
  

• or install with pip, then run it with -m:

   $ pip install maildir2mbox
   $ python -m maildir2mbox --help
  

• Philippe Fremy, April 2013-2020
• Frédéric Grosshans, 19 January 2012
• Nathan R. Yergler, 6 June 2010

The file is under no license/public domain. See LICENSE.txt for more details.