RequiredForUpgrade has two data types

[akassharjun]

Issue Report:

1. Did you encounter this recently, or has this bug always been there?
   Recently
2. Expected behaviour:
   Not sure on what I should put here
3. Console logs (if applicable):
   com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: For input string: "Maxed"
4. Screenshots (if applicable):

Use the player tag of a player who has at least one max level card.

The attribute requiredForUpgrade inside the card object of a "Max Level" card will say "Maxed" while the rest of the cards will have an integer amount.

The attribute cannot be both integer & string.

Request Details:

GET
https://api.royaleapi.com/player/82RJJG902

Response Details:

I only get a throwable, which says `"com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: For input string: "Maxed""`

[selfish]

Read the docs. :)
This value is either a numeric amount, or a string "Maxed".