- Added while/endwhile and do/while syntaxes

- Fix the abstractclass requirement of parse() function

src/Extension/PrintExtension.php

@@ -18,7 +18,7 @@ class PrintExtension implements Extension {
         $this->encoding = ini_get("default_charset");
     }
 
-    public function parse(/*\Picae\Compiler\Context*/ &$context, ?string $arguments, string $token) : string
+    public function parse(\Picea\Compiler\Context &$context, ?string $arguments, string $token) : string
     {
         switch($token) {
             case 'print':