PublicAPI Java 4.0

Note: This release does contain breaking changes due to changed packages, and the new HTTP client framework.

New in this release:

• The Core API can now have custom HTTP clients, or "transports" as they are referred to. #399
• There are three transports that can be chosen from which are included in 4.0, or you can create your own. The included transports are Apache HttpClient, Unirest, and Project Reactor #425
• A player-based object has been added when requesting player data, this allows easy access to common data and even some filter options. #260
• A Utility class has been added for GuildLeveling. #254
• Methods for accessing the SkyBlock profiles endpoint have been added. #297

The following methods have been removed/replaced:

• HypixelAPI#getWatchdogStats has been replaced with HypixelAPI#getPunishmentStats.
• HypixelAPI#getGameCounts has been replaced with HypixelAPI#getCounts.
• HypixelAPI#getPlayerCount has been removed, the same data is available in HypixelAPI#getCounts.
• HypixelAPI#findGuildByPlayer has been removed, the guild can be requested directly via HypixelAPI#getGuildByPlayer instead.
• HypixelAPI#findGuildByName has been removed, the guild can be requested directly via HypixelAPI#getGuildByName instead.

Other changes worth noting:

• Now uses the API-Key header for authentication.
• ExampleUtil now supports a system property for easier testing.