This release is a rewrite of the existing codebase, sentry-cocoa now uses Objective-C instead of Swift.
Please make sure to check out the docs since this update introduced many breaking changes.
https://docs.sentry.io/clients/cocoa/
KSCrash is now optional, you can use Sentry without it, we still recommend using KSCrash by default otherwise Sentry will not catch any crashes.