* Client-Side Metrics Include
* Wiki: https://tiny.amazon.com/cpso0wg6
* Needs to be included at the top of pages because it tracks latency--
* ue_t0 needs to be as close to body load as possible.
* - ue.tag maps to URLType dimension of OnlineQueryLog in PMET. Because we cannot add
* custome data to other dimensions in PMET through CSM, we are replicating it thrice to
* cover each store, page type, and the intersections of the two.
* - Whitelists are listed in the usage guide:
Collects X-Men #11-21. See the first appearance of the unstoppable Juggernaut, the cosmic Stranger, the mutant Mimic, and in a classic three-part saga, the mutant-hunting robot Sentinels. And for good measure we're topping it off with the return of Magneto and his Brotherhood of Evil Mutants!