I used to have a zip file that I could update and WRobot checked for updates automatically. I can't remember how to do this, and I have about 10 I want to upload right now.

Hello, I have removed it.

But it is possible manually, you need to edit file "WRobot\Settings\packages.xml" and add link to your zip file, for it edit packages.xml with notepad and add after "<UrlProtocolXML>":

    <UrlProtocolXML>
      <UrlZip>http://url.com/file.zip</UrlZip>
      <Name>Your files name</Name>
      <Author>Your name</Author>
      <Size>0</Size>
      <AutoUpdate>true</AutoUpdate>
    </UrlProtocolXML>