Need more public API

[nixzhu]

I have try to make extension for ASTableNode & ASCollectionNode (both from ASDK) with DeepDiff.
So the ChangeWithIndexPath, IndexPathConverter & Array.executeIfPresent need to be public.

Could you make it happen?

[onmyway133]

@nixzhu Hi, it seems this PR matches your requirement #10. I'm working on to make sure it's good to merge

[nixzhu]

@onmyway133 Thank you! I'll wait for it merged.

[onmyway133]

@nixzhu I just merge this #10. Can you check master to see if it works for you?

[nixzhu]

@onmyway133 It works for me. Thank you!

[onmyway133]

@nixzhu I will try to make new release soon

[onmyway133]

@nixzhu Hi, sorry for being late. Here is the new release with Swift 4.1 https://github.com/onmyway133/DeepDiff/releases/tag/1.2.0

[nixzhu]

@onmyway133 Thank you!

[SolorzanoJose]

@nixzhu how did you write this extension?