update elements and fix some bugs

lib/src/prism/components/prism-processing.js

+Prism.languages.processing = Prism.languages.extend('clike', {
+        'keyword': /\b(?:break|catch|case|class|continue|default|else|extends|final|for|if|implements|import|new|null|private|public|return|static|super|switch|this|try|void|while)\b/,
+        'operator': /<[<=]?|>[>=]?|&&?|\|\|?|[%?]|[!=+\-*\/]=?/
+});
+Prism.languages.insertBefore('processing', 'number', {
+        // Special case: XML is a type
+        'constant': /\b(?!XML\b)[A-Z][A-Z\d_]+\b/,
+        'type': {
+                pattern: /\b(?:boolean|byte|char|color|double|float|int|XML|[A-Z][A-Za-z\d_]*)\b/,
+                alias: 'variable'
+        }
+});
+
+// Spaces are allowed between function name and parenthesis
+Prism.languages.processing['function'].pattern = /[a-z0-9_]+(?=\s*\()/i;
+
+// Class-names is not styled by default
+Prism.languages.processing['class-name'].alias = 'variable';