v2.1.0

• Use the upstream version of console-polyfill: #306
• The verbose option still existed but didn't do anything, this adds back the functionality to
  output some information to the console: #311
• Fix how unhandled rejections operate if they are rejected with a non-error: #312
• Handle logging both messages and errors in one log call properly: #313
• Actually included the options set in payload in the final payload on the server side: #317
• lastError was an undocumented feature that was accidentially removed, add it back but as a
  function rather than as a simple property: #318
• Add a blacklist functionality similar to the host whitelist: #319
• Add a helper function for wrapping server-side callbacks: #321
• There was a bug in the payload if you hit your own configured rate limit: #325
• Add checkIgnore to the server side to match what is available in the browser: #326
• Allow environment to be nested inside the payload key in the configuration on the server side to
  match what we allow in the browser: #329