title: Convert container bound google apps script to standalone
body: <p>About a year ago, I created a container-bound script that attaches to a spreadsheet (used to schedule users) and monitors it for changes, updating google calendars with the various events put in the spreadsheet. I created it as a container-bound script as initially this met my needs prior to publishing (I could refer to ActiveSpreadsheet, etc). </p>
  
  <p>When the script was useful enough, I published it to the Sheets add-on store for others to use as well, and it now has many users - unfortunately, there are several restrictions on published container bound scripts, such as not being able to use the REST api.</p>
  
  <p>I've tested the script as a standalone script using the 'test as add-on' feature, and the referents which documentation implies will not be useable as a standalone script (such as getActiveSpreadsheet) work just fine. Given this, it seems like all published scripts should be standalone. I'd like to convert mine without just making a new project and forcing all my users to uninstall the current one and install the new. Is such a conversion possible?</p>