Storage mining fixups...

* Use IV to make unique identies
* Use hex! macro for hex literal and not string converted to u8 slice
* fix sha sampling to control init/end of sha state

src/lib.rs

@@ -91,6 +91,10 @@ extern crate chrono;
 extern crate clap;
 extern crate dirs;
 extern crate generic_array;
+#[cfg(test)]
+#[cfg(any(feature = "chacha", feature = "cuda"))]
+#[macro_use]
+extern crate hex_literal;
 extern crate ipnetwork;
 extern crate itertools;
 extern crate libc;