Increase Splitting Usage & Remove Artifact Analysis Limit

Change the usage times of "Astral Splitting" from 4 to 42; Cooling time from 10years to 1. Remove the limit of the usage of "Artifact Analysis", now you can gacha as much as you want. Change Log: Reduce added cost of "Artifact Analysis" to 25 and set a max limit of 1000. Now can also get Treasure Hunters series specimens Primal Calling specimens Origin specimens and Precursor specimens. Since one man can never step twice into the same river, after getting all the series specimens it still canbe use but just return nothing. (It seems that one empire just can't get two same specimens in original game after some update.) Slightly changed the cover pic. Now scrapping the chambered_clay_pot.