Fixed crash when writing an incomplete command with variable span len…

…gth (#19)

* Updated to pm5

* Changed signature of Runnable->getPermission() to match PM5's signature

* Added typehint to getPermissions() method

* Update SimplePacketHandler virion

* Fixed crash when writing an incomplete command with variable span length

src/CortexPE/Commando/traits/ArgumentableTrait.php

@@ -96,6 +96,7 @@ public function parseArguments(array $rawArgs, CommandSender $sender): array {
 			];
 		}
 		$offset = 0;
+		$argOffset = 0;
 		if(count($rawArgs) > 0) {
 			foreach($this->argumentList as $pos => $possibleArguments) {
 				// try the one that spans more first... before the others
@@ -128,6 +129,7 @@ public function parseArguments(array $rawArgs, CommandSender $sender): array {
 							$required--;
 						}
 						$offset += $len;
+						++$argOffset;
 						$parsed = true;
 						break;
 					}
@@ -136,7 +138,7 @@ public function parseArguments(array $rawArgs, CommandSender $sender): array {
 					}
 				}
 				if(!$parsed && !($optional && empty($arg))) { // we tried every other possible argument type, none was satisfied
-					$expectedArgs = $this->argumentList[$offset];
+					$expectedArgs = $this->argumentList[$argOffset];
 					$expected = "";
 					foreach($expectedArgs as $expectedArg){
 						$expected .=  $expectedArg->getTypeName() . "|";