What I did

Fixed issue #1047 where verbose output did not detect when token came from the CHANGELOG_GITHUB_TOKEN ENV variable. Updated value to specify if it came from options or ENV vars.

How I did it

Added new method censored_token to options.rb. Method censors the token by specifying where the token came from, or if it wasn't used.

How to verify

• Run the changelog generator with no token in ENV vars or in options. See that verbose output includes: :token=>"No token used"
• Run the changelog generator with token in options. See that output includes: :token=>"Used token from options"
• Run the changelog generator with token in ENV vars. See that output includes: :token=>"Used token from environment variable"
• Run the changelog generator with token in both the ENV vars and options. See that output specifies token is used from options: :token=>"Used token from options"