fix: preserve frontmatter when updating changelog

[TimKnight-DWP]

fixes: #106

[TimKnight-DWP]

I'll have a look at these failing tests

[TimothyJones]

Thanks! Sorry about the lint settings. Every time I work on this, I'm tempted to replace the format rules with default prettier settings, but I didn't really want to fork it and then go "ok here are all my opinions", you know? :)

You may also want to merge in master again - speaking of lint settings, I realised that some of the tests weren't actually running, due to dangling promises. So I updated those with some defaults designed to prevent tests that don't do what is expected.

I've enabled the "update branch" button to make this easy.

[TimKnight-DWP]

To be fair, I think moving to some Default Prettier settings would make sense, at least they are a default set of opinions used across tech 😄

[TimothyJones]

Good point, prettier has definitely won out. I'm convinced.

I reckon I'll do it after this, #99 and #109 have landed - I don't want to stamp on the toes of people currently in the middle of contributing.

[TimKnight-DWP]

Awesome.

[TimKnight-DWP]

Could've sworn I had run "fix" before pushing, but hey ho.

All done now

[TimothyJones]

Thanks again! Releasing as 12.0.0 (since I also dropped node 14 and 16)

[TimKnight-DWP]

Thanks Tim, I'll keep an eye out and integrate 12.0.0 into our pipelines as and when