Use Cadova 0.8.0

Author: tomasf

Package.resolved

@@ -10,7 +10,7 @@ let package = Package(
         .executable(name: "Helical-Demo", targets: ["Demo"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/tomasf/Cadova.git", .upToNextMinor(from: "0.7.0")),
+        .package(url: "https://github.com/tomasf/Cadova.git", .upToNextMinor(from: "0.8.0")),
     ],
     targets: [
         .target(