Changes

Summary

1. add string concat operation (commit: 2ad8219) (details)

Commit 2ad821977777084b34a063537019f664ad71b1d5 by Flo.e3 add string concat operation (commit: 2ad8219)
	bungee/src/main/java/codecrafter47/bungeetablistplus/expression/ExpressionTokenizer.java (diff)
	bungee/src/test/java/codecrafter47/bungeetablistplus/config/ExpressionTest.java
	bungee/src/main/java/codecrafter47/bungeetablistplus/config/PlayerSet.java (diff)
	bungee/src/main/java/codecrafter47/bungeetablistplus/expression/Expression.java
	bungee/src/main/java/codecrafter47/bungeetablistplus/config/components/ConditionalComponent.java (diff)
	bungee/src/main/java/codecrafter47/bungeetablistplus/config/CustomPlaceholder.java (diff)
	bungee/src/main/java/codecrafter47/bungeetablistplus/config/Expression.java
	bungee/src/main/java/codecrafter47/bungeetablistplus/expression/Token.java (diff)
	bungee/src/main/java/codecrafter47/bungeetablistplus/config/Config.java (diff)
	bungee/src/main/java/codecrafter47/bungeetablistplus/template/PingTemplate.java (diff)
	bungee/src/test/java/codecrafter47/bungeetablistplus/expression/ExpressionTest.java