Export Timetag and BundleElement

Author: davidgranstrom

src/root.zig

@@ -1,6 +1,8 @@
 pub const Value = @import("value.zig").Value;
 pub const Message = @import("message.zig").Message;
 pub const Bundle = @import("bundle.zig").Bundle;
+pub const BundleElement = @import("bundle.zig").BundleElement;
+pub const Timetag = @import("bundle.zig").Timetag;
 
 test {
     const std = @import("std");