ensure deep merge of config

[jetersen]

fixes #1011

[jetersen]

@nowsprinting seems we forgot the deep merge part in #973 😅

[KevinBatdorf]

Thanks. How can I ensure no one accidentally adds a label that bumps the major version? Would this work as expected?

    major:
        labels:
            - ''
    minor:
        labels:
            - 'minor'
    patch:
        labels:
            - 'patch'
    default: patch

[jetersen]

This would still work, that was part of the deep merge fix. You can see the default config here: https://github.com/release-drafter/release-drafter/blob/master/lib/default-config.js

    minor:
        labels:
            - 'minor'
    patch:
        labels:
            - 'patch'
    default: patch

in our code once merged with default it will become:

    major:
        labels: []
    minor:
        labels:
            - 'minor'
    patch:
        labels:
            - 'patch'
    default: patch

[nowsprinting]

@jetersen Thanks!
I didn't expect this issue. sorry.