Deprecated — use assert2

Use assert2 instead of this crate. assertify! can be replaced by the more capable assert2::assert! everywhere, and testify! can implemented with a short macro:

macro_rules! testify {
    ($name:ident, $($test:tt)+) => {
        #[test]
        fn $name() {
            ::assert2::assert!($($test)+);
        }
    };
}