Merge branch 'Python2' Bring across version number updates from 6.8.1 release

diff --cc DeDRM_plugin/__init__.py
index 3b1e151acd1b00f9b88925a66e837e0a8f758af8,303bffdd5b078dba37da0a0314868305a557b8d7..cdbd4a975220e435667865c05920ab875b0737a9
--- 1/DeDRM_plugin/__init__.py
--- 2/DeDRM_plugin/__init__.py
+++ b/DeDRM_plugin/__init__.py
@@@ -69,7 -71,7 +69,8 @@@ __docformat__ = 'restructuredtext en
  #   6.6.3 - More cleanup of kindle book names and start of support for .kinf2018
  #   6.7.0 - Handle new library in calibre.
  #   6.8.0 - Full support for .kinf2018 and new KFX encryption (Kindle for PC/Mac 2.5+)
+ #   6.8.1 - Kindle key fix for Mac OS X Big Syr
 +#   7.0.0 - Switched to Python 3 for calibre 5.0. Thanks to all who comtibuted
  
  """
  Decrypt DRMed ebooks.

diff --cc DeDRM_plugin/kindlekey.py
index 73425f8685cb053a7b406365aa434e8d1a7dce89,a4989dfb2038c16f6210b67bb1e9b18232042908..35baa46215f63fe933999683095c09911c58bbcc
--- 1/DeDRM_plugin/kindlekey.py
--- 2/DeDRM_plugin/kindlekey.py
+++ b/DeDRM_plugin/kindlekey.py
@@@ -28,7 -30,7 +28,8 @@@ __version__ = '3.0
  #  2.5   - Final Fix for Windows user names with non-ascii characters, thanks to oneofusoneofus
  #  2.6   - Start adding support for Kindle 1.25+ .kinf2018 file
  #  2.7   - Finish .kinf2018 support, PC & Mac by Apprentice Sakuya
+ #  2.8   - Fix for Mac OS X Big Sur
 +#  3.0   - Python 3 for calibre 5.0
  
  
  """