Upgrade to 0.15

[ethereumdegen]

I was able to make the bevy portion of this crate compatible with bevy 0.15 . You can see the code here

https://github.com/ethereumdegen/transform-gizmo

[ActuallyHappening]

Why no draft PR? Anyway, I'll need to port this to 0.15 to get bevy_editor_pls to compile. Will open PR

[ethereumdegen]

No pr bc i didnt convert the examples in the root yet . Also im getting a panic when i integrated this in my own editor . The panic occurs when i deselect , and remove the targets for the gizmo. And i cant figure out the cause. The error is something about index 0 is invalid for slice 0

[ActuallyHappening]

I didn't find any panic for my PR, maybe check mine out for differences?

[ethereumdegen]

Fyi .. crash bug related to slice in 15 reported by 2 separate users

#85

[ethereumdegen]

fixed the crash bug in my pr

#85 (comment)

[ethereumdegen]

i also pulled in the changes that Shenmarukai made in order to fix the local/global xform issue so commit cf98c4e is a version of this package that should work quite nicely with 0.15 . it is for me at least