creating a packr/v2 box loads .env files

[wayneashleyberry]

packr depends on envy, envy loads .env files in an init() function. I'd consider this a side-effect and don't think it should happen automatically. This means that by simply importing packr.New any .env files will be automatically processed.

For my use case, we only ever load .env files during local development, and do so explicitly using the godotenv command — but now we have no control over that because any package that depends on packr.Box will load .env files.

• gobuffalo/envy#init
• test repo
• build output

[stanislas-m]

Fixed with #257.