Return false from callbacks to prevent default behavior

[davidalejandroaguilar]

This adds the possibility of stopping a behavior from a callback if it returns false, as it's done on morphdom.

[1cg]

Hi david,

Looks good, would you mind adding some tests for the change?

[davidalejandroaguilar]

@1cg My bad, didn't notice we had a tests folder, I'll add them.

[1cg]

hey @davidalejandroaguilar just checking in on this, would like to merge w/ some tests

[tobyzerner]

Looking forward to this being merged - in my case, idiomorph is trying to merge <svg> child elements where I just want the entire new <svg> to overwrite the old.

[1cg]

OK, merging w/o tests. I will add some later. (lol)

[daun]

This looks fantastic! @1cg Any chance this could be released? As far as I can tell, the current release on npm doesn't include the changes from this PR.

[1cg]

i will try to cut a release tomorrow

[daun]

🤠

[1cg]

should be available in the latest release on NPM

[davidalejandroaguilar]

I just noticed I abandoned this PR 🤦🏼‍♂️ . My apologies @1cg, life got in the way but absolutely didn't mean to ghost you.

Thank you for merging!