vim-gnupg version 2.7.0

* Re-structure plugin so most of the implementation is under autoload/,
  with only required functionality in plugin/.  Thanks to Lucas Hoffmann
  for the help.
* Split the documentation into README (description, intro) and Vim help
  files (details relevant for usage).  Thanks to Victor Koronen.
* Honor 'verbose' to determine when to emit debug logs, as a gradual
  move away from g:GPGDebugLevel/g:GPGDebugLog
* Do not use the '[/'] marks when saving the entire buffer to disk.
  This fixes an issue where plugins which reformat the buffer on save
  were causing only the reformatted portion of the buffer to be saved.