update elements and fix some bugs

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

 Prism.languages.clike = {
         'comment': [
                 {
                         pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
                         lookbehind: true
                 },
                 {
                         pattern: /(^|[^\\:])\/\/.*/,
                         lookbehind: true
                 }
         ],
-        'string': /("|')(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
+        'string': /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
         'class-name': {
-                pattern: /((?:(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
+                pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
                 lookbehind: true,
                 inside: {
                         punctuation: /(\.|\\)/
                 }
         },
         'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
         'boolean': /\b(true|false)\b/,
         'function': /[a-z0-9_]+(?=\()/i,
-        'number': /\b-?(0x[\dA-Fa-f]+|\d*\.?\d+([Ee]-?\d+)?)\b/,
-        'operator': /[-+]{1,2}|!|<=?|>=?|={1,3}|&{1,2}|\|?\||\?|\*|\/|~|\^|%/,
+        'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
+        'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
         'punctuation': /[{}[\];(),.:]/
 };