ClassCastException when calculated stat value is an integer

[alyphen]

Stack trace:

[23:42:34 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'stats' in plugin rpk-stats-bukkit v1.0.0
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:649) ~[spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1344) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1179) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
	at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:739) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Double
	at com.rpkit.stats.bukkit.stat.RPKStatImpl.get(RPKStatImpl.kt:39) ~[?:?]
	at com.rpkit.stats.bukkit.command.stats.StatsCommand.onCommand(StatsCommand.kt:48) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.11.2.jar:git-Spigot-7d78b81-e2a288c]
	... 15 more

If a calculated stat value is an integer, a ClassCastException occurs.