Turn labels into a list

[marcelosousa]

Is your feature request related to a problem? Please describe.
In #38 we have added a new field "name" into the label. In the v3.x as it will 'breaking' from v2.x we should take the opportunity to convert the map into a list of labels.

Describe the solution you'd like
Turn a map into a list.

Describe alternatives you've considered
None.

Additional context
None.

[marcelosousa]

After discussing with @ferreiratiago , we are not certain that this will happen.

The reason is that we would like to have simple names for labels that can be used by the built-ins and at the same time complicated ones with emojis on GH.

[marcelosousa]

To be revised for v4.x