Merge Andrew-Chen-Wang/github-wiki-action

[jcbhmr]

This PR would merge in my contributions from Andrew-Chen-Wang/github-wiki-action

Things have been customized (a bit) to match this repo. For instance, in the examples I've used spenserblack/actions-wiki@v1

closes #72
closes #68
closes #70
closes #49
closes #2
closes #67

related #57

[jcbhmr]

Be warned! This would bring this action to feature-parity with the Andrew-Chen-Wang repo. That comes with a lot of nice features and good docs! 😊 But it also means that this repo would be essentially a fork with no changes 😢 #78

It looks like this action is being taken in a new direction with potentially more complexity? #80 😀 If so, then this is PR would merge in a great baseline to improve from.

[jcbhmr]

Note that this would also change the text in the "Alternatives" section to drop the windows compat thing. That's been added in https://github.com/Andrew-Chen-Wang/github-wiki-action/releases/tag/v4.0.0

[spenserblack]

I think that, until the rewrite is complete and merged in, there should be a feature freeze. I'll consider the rewrite as v0.4.

Perhaps you can document in Andrew-Chen-Wang's action that this competitor's development has slowed for a rewrite 😜