Print plugin version in verbose mode

plugin/gnupg.vim

@@ -95,6 +95,9 @@ highlight default link GPGHighlightUnknownRecipient ErrorMsg
 " initialize the plugin
 "
 fun s:GPGInit()
+  " print version
+  call s:GPGDebug(1, "gnupg.vim ". g:loaded_gnupg)
+
   " first make sure nothing is written to ~/.viminfo while editing
   " an encrypted file.
   set viminfo=