[DRE-maint] Bug#625558: transition: libmagick4

[Bastien ROUCARIES]

Package: librmagick-ruby
Severity: wishlish
block: 625544


Hi,

We would like to perform the transition from  libmagickcore3, libmagick++3, libmagickwand3 to libmagickcore4, libmagick++4, 
libmagickwand4

This transition will requires sourcefull uploads as there is a (minimal) API change.

Packages are in experimental

Thanks

Bastien