Implement meta / Sponge option commands & fix meta caching system. Fully resolves #23

sponge/src/main/java/me/lucko/luckperms/sponge/LPSpongePlugin.java

@@ -34,7 +34,6 @@ import me.lucko.luckperms.common.calculators.CalculatorFactory;
 import me.lucko.luckperms.common.commands.ConsecutiveExecutor;
 import me.lucko.luckperms.common.commands.Sender;
 import me.lucko.luckperms.common.config.LPConfiguration;
-import me.lucko.luckperms.common.constants.Message;
 import me.lucko.luckperms.common.constants.Permission;
 import me.lucko.luckperms.common.contexts.ContextManager;
 import me.lucko.luckperms.common.contexts.ServerCalculator;

sponge/src/main/java/me/lucko/luckperms/sponge/service/LuckPermsGroupSubject.java

@@ -43,7 +43,7 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Collectors;
 
-import static me.lucko.luckperms.common.utils.ArgumentChecker.unescapeCharacters;
+import static me.lucko.luckperms.api.MetaUtils.unescapeCharacters;
 
 @EqualsAndHashCode(of = "group")
 public class LuckPermsGroupSubject implements Subject {

sponge/src/main/java/me/lucko/luckperms/sponge/service/LuckPermsSubjectData.java

@@ -41,7 +41,7 @@ import org.spongepowered.api.util.Tristate;
 import java.util.*;
 import java.util.stream.Collectors;
 
-import static me.lucko.luckperms.common.utils.ArgumentChecker.escapeCharacters;
+import static me.lucko.luckperms.api.MetaUtils.escapeCharacters;
 
 @AllArgsConstructor
 public class LuckPermsSubjectData implements SubjectData {

sponge/src/main/java/me/lucko/luckperms/sponge/service/LuckPermsUserSubject.java

@@ -34,7 +34,6 @@ import org.spongepowered.api.entity.living.player.Player;
 import org.spongepowered.api.service.context.Context;
 import org.spongepowered.api.service.permission.Subject;
 import org.spongepowered.api.service.permission.SubjectCollection;
-import org.spongepowered.api.service.permission.SubjectData;
 import org.spongepowered.api.util.Tristate;
 
 import java.util.*;