old_contents: 
  (function(){'use strict';window.addEventListener('load',function(){var copyBtn=document.querySelector('.js-copy-btn');var iPhoneORiPod=false,iPad=false,safari=false;if(navigator.userAgent.match(/iPhone|iPod/i)){iPhoneORiPod=true;}else if(navigator.userAgent.match(/iPad/i)){iPad=true;}else if(/^((?!chrome).)*safari/i.test(navigator.userAgent)){safari=true;}
  if(iPhoneORiPod||iPad||safari){copyBtn.textContent="Select text";}
  if(copyBtn){copyBtn.addEventListener('click',function(){var copyItem=document.querySelector('.text-to-copy');if(copyItem){copyItem.select();try{document.execCommand('copy');if(iPhoneORiPod){copyBtn.textContent="Now tap 'Copy'";}else if(iPad){copyBtn.textContent="Now tap the text, then 'Copy'";}else if(safari){copyBtn.textContent="Press Command + C to copy";}else{copyBtn.textContent="Copied!";}}catch(ignore){copyBtn.textContent="Please copy manually";}
  copyItem.focus();if(iPhoneORiPod||iPad){copyItem.selectionStart=0;copyItem.selectionEnd=copyItem.textContent.length;}else{copyItem.select();}
  copyBtn.disabled=true;}else{throw new Error("You don't have a <textarea> with the class: 'text-to-copy'. Please check the simpleJsCopy README.");}});}else{throw new Error("You don't have a <button> with the class: 'js-copy-btn'. Please check the simpleJsCopy README.");}});}());
new_contents: /* simpleJsCopy.js v0.2.1 by @ryanpcmcquen */
  (function(){'use strict';window.addEventListener('load',function(){var copyBtn=document.querySelector('.js-copy-btn');var iPhoneORiPod=false,iPad=false,safari=false;if(navigator.userAgent.match(/iPhone|iPod/i)){iPhoneORiPod=true;}else if(navigator.userAgent.match(/iPad/i)){iPad=true;}else if(/^((?!chrome).)*safari/i.test(navigator.userAgent)){safari=true;}
  if(iPhoneORiPod||iPad||safari){copyBtn.textContent="Select text";}
  if(copyBtn){copyBtn.addEventListener('click',function(){var copyItem=document.querySelector('.text-to-copy');if(copyItem){copyItem.select();try{document.execCommand('copy');if(iPhoneORiPod){copyBtn.textContent="Now tap 'Copy'";}else if(iPad){copyBtn.textContent="Now tap the text, then 'Copy'";}else if(safari){copyBtn.textContent="Press Command + C to copy";}else{copyBtn.textContent="Copied!";}}catch(ignore){copyBtn.textContent="Please copy manually";}
  copyItem.focus();if(iPhoneORiPod||iPad){copyItem.selectionStart=0;copyItem.selectionEnd=copyItem.textContent.length;}else{copyItem.select();}
  copyBtn.disabled=true;}else{throw new Error("You don't have a <textarea> with the class: 'text-to-copy'. Please check the simpleJsCopy README.");}});}else{throw new Error("You don't have a <button> with the class: 'js-copy-btn'. Please check the simpleJsCopy README.");}});}());
  
subject: add version to minified asset