See Windows users: see https://github.com/wraitii/0ad/tree/sm68
These are the API changes for SM68. They're all essentially trivial.
Overall:
- Remove UTF16 script execution since UTF8 is supported in SM68 and 78
- Header movement
- Realms replace Compartments (basically 1-1)
- JSRequests are removed entirely.
- Trivial API updates in ProxyHandlers, ArrayBuffer, Warnings, GC reasons, Context options, ObjectIsFunction, ValueVectors and JSCompartment