Allow define sort on cliff.toml

[robsonpeixoto]

Is your feature request related to a problem? Please describe.

Is not a problem, but is easier to share cliff.toml with all required config than share the file and ask people to pass the sort parameter when run.

[orhun]

I implemented this in 4eb334d. Now you can define the following values in the configuration file:

[git]
# sort the tags topologically
topo_order = false
# sort the commits inside sections by oldest/newest order
sort_commits = "oldest"

These changes will be available with the upcoming release so feel free to try it out and report bugs by either pulling the docker image or building from source.