Trylle

What's Changed

Add JSON encoder extension — a new ext library for JSON encoding by @rohan-patnaik in https://github.com/cel-expr/cel-go/pull/1340
Upstream network.IP/CIDR support from Kubernetes by @tdesrosi in https://github.com/cel-expr/cel-go/pull/1238
Managed execution frame with async call foundations by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1316
Execution frame integration with updated InterpretableV2 by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1344
Add conformance test runner for CEL Policies by @l46kok in https://github.com/cel-expr/cel-go/pull/1319

Fix unintentional unwrapping of optionals at any level of depth by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1315
Fix has() unknown propagation during partial evaluation by @0xASTRA in https://github.com/cel-expr/cel-go/pull/1324
Enforce expression size limit before source construction by @thesmartshadow in https://github.com/cel-expr/cel-go/pull/1302
Policy variable scoping fixes by @jnthntatum in https://github.com/cel-expr/cel-go/pull/1321
Emit valid CEL for doubles in scientific notation in the parser/unparser by @moraneus in https://github.com/cel-expr/cel-go/pull/1326
Allow aliases for simple names in containers by @rohan-patnaik in https://github.com/cel-expr/cel-go/pull/1327
Reject out-of-range minutes in timezone offset parsing by @alhudz in https://github.com/cel-expr/cel-go/pull/1336
Validate offset on empty-string path in indexOf and lastIndexOf by @alhudz in https://github.com/cel-expr/cel-go/pull/1335
Guard int32/uint32 map key narrowing in qualifyInternal by @alhudz in https://github.com/cel-expr/cel-go/pull/1337
Add max size check to genRange() in ext/lists to prevent OOM by @marwan9696 in https://github.com/cel-expr/cel-go/pull/1310

Ensure receiver and global matches cost estimates agree by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1350
startsWith/endsWith runtime cost agreement with checked cost by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1351
Avoid repeated construction of cost tracker by @pohly in https://github.com/cel-expr/cel-go/pull/1357

Test Runner usability improvements by @jnthntatum in https://github.com/cel-expr/cel-go/pull/1320
Minor updates to test coverage and code quality by @TristonianJones in https://github.com/cel-expr/cel-go/pull/1318
Remove duplicate policy tests now covered by policy conformance tests by @l46kok in https://github.com/cel-expr/cel-go/pull/1332
Minor Google3 import fixes by @l46kok in https://github.com/cel-expr/cel-go/pull/1331

Update documentation for nested first-match rules by @jnthntatum in https://github.com/cel-expr/cel-go/pull/1323
Add migration warning to README by @dmitriplotnikov in https://github.com/cel-expr/cel-go/pull/1330