Update from 3.0.0 to 4.1.0 not sending errors to Sentry

[Luisetelo]

Hi everyone,

I'm using ember-cli-sentry 3.0.0 with the following configuration:

    sentry: {
      dsn: process.env.SENTRY_DSN,
      development: false
      ravenOptions: {
        environment: 'local'
      }
    },

and it works perfectly fine. However, when I update to ember-cli-sentry 4.1.0 and the following config:

    sentry: {
      dsn: process.env.SENTRY_DSN,
      development: 'false',
      environment: 'local'
    },

I noticed that errors are not sent anymore to Sentry. They appear in the console. I also notice that isRavenUsable never becomes true.

In both cases, the project is built without the --environment=production flag.

Am I missing something in the configuration of ember-cli-sentry 4.1.0?