Simplified and improved the new gpg wrapper.
Simplified and improved the new gpg wrapper.

 - only one class for using gnupg, as in the original wrapper
 - use exceptions instead of integer constants for errors
 - return values are now namedtuples

jadonk/debexpo,jadonk/debexpo,jonnylamb/debexpo,jonnylamb/debexpo,jonnylamb/debexpo,jadonk/debexpo