Reset for 0.16 (redux)

Starting from scratch

src/root.zig

@@ -1,2 +1,8 @@
 pub const Archive = @import("archive.zig");
 pub const ExtractionOptions = @import("options.zig");
+
+test {
+    const std = @import("std");
+
+    std.testing.refAllDecls(Archive);
+}