+ allows to BCC the signer, thanks Joost van Baal (Closes: #316176).
+ new option to pause before continuing to the signing step,
thanks Christof Douma (Closes: #316129).
+ + Create unique attachment filenames, thanks Robin H. Johnson
+ (Closes: #318469).
* Depend on libtext-template-perl as caff needs it.
* Update to Standards-Version 3.6.2, no changes necessary.