Make sure calamares depends on squashfs-tools

debian/control

@@ -24,12 +24,12 @@ Build-Depends: debhelper (>= 9), cmake,
  qttools5-dev-tools
 Standards-Version: 3.9.5
 Homepage: https://github.com/calamares/calamares
-Vcs-Git: https://github.com/calamares/calamares-debian.git
+Vcs-Git: http://github.com/calamares/calamares-debian.git
 Vcs-Browser: https://github.com/calamares/calamares-debian.git
 
 Package: calamares
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}
+Depends: squashfs-tools, ${shlibs:Depends}, ${misc:Depends}
 Description: distribution-independent installer framework
  distribution-independent installer framework.
  .