0.5.10 core library update

[heckj]

• update to core library version 0.5.10
• PatchAction::Insert no longer accepts marks with the 0.5.10 API
  • remove from UDL
  • remove from Rust code making library overlay
  • remove from Swift API

[heckj]

@alexjg when you have some time, would you look over these changes - I think the only notable API change was removing the marks parameter from PatchAction::Insert, but I may have not spotted other API updates that are important here.

[heckj]

I found the relevant commits in the recent history - I think this covers the required changes for now, and opened #156 (in addition to #148 ) to expose more API through to the Swift language down the road.

[alexjg]

Apologies, I missed this mention. Yes the only change is to the Insert patch.

[heckj]

No worries, thanks for the double-check!