Sourced from github.com/google/cel-go's releases.

Release v0.28.0

High-Level Changes

• Enhanced JSON Interoperability: New support for JSON names across the checker, AST, and runtime allows for more seamless data handling when working with JSON-native structures.
• Improved Developer Tooling: Integration is now smoother thanks to new utilities for converting Go errors into cel.Issues and more descriptive, context-aware error messages.
• Greater Environment Flexibility: You can now redeclare variables as constants and export parse limit options, providing finer control over how CEL environments are configured and constrained.
• Native Struct Improvements: Support for mixing CEL and native values within native structs simplifies the handling of complex, hybrid data types.

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🚀 Features

• Add helper method to check whether a function has a singleton binding in google/cel-go#1266
• Helper utility for converting a Go error into cel.Issues in google/cel-go#1267
• Policy API improvements in google/cel-go#1268
• CEL Test usability requirements in google/cel-go#1269
• Better context-related error messages in google/cel-go#1271
• Sort env.Config values where reasonable in google/cel-go#1273
• Support redeclaring variables as constants in NewEnv in google/cel-go#1275
• Add support for exporting parse limit options in google/cel-go#1277
• Support mixing CEL values and native values in native structs in google/cel-go#1270
• Add checker, AST, and type-provider support for JSON names in google/cel-go#1283
• JSON field names runtime support in google/cel-go#1286
• Optionally include reachable fieldpaths in prompt in google/cel-go#1285
• REPL -- cel-spec pb2 and json name support google/cel-go#1294

🐞 Bug Fixes

• Fix support for config-based type references in google/cel-go#1265
• Check arg kinds in optional.or and .orValue impl in google/cel-go#1276
• Bazel fixes for import in google/cel-go#1278
• Support zero-value literals in presence test inlining google/cel-go#1280
• Cache concatList.Size() to prevent O(N^2) evaluation time google/cel-go#1291
• Preserve runtime error node IDs from Resolve google/cel-go#1290
• Default enable identifier escaping with backticks google/cel-go#1295
• Cap format string precision to prevent memory exhaustion google/cel-go#1292

🛠️ Maintenance & Internal

• chore: Migrate gsutil usage to gcloud storage in google/cel-go#1274
• Lint fixes for exported function/type comments in google/cel-go#1279
• Lint fixes for import in google/cel-go#1287

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Full Changelog: https://github.com/google/cel-go/compare/v0.27.0...v0.28.0-alpha

Release v0.28.0-alpha

High-Level Changes

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• 6b8f6d6 fix: cap format string precision to prevent memory exhaustion (#1292)
• d942970 Default enable identifier escaping with backticks (#1295)
• 7114ed2 Preserve runtime error node IDs from Resolve (#1290)
• d91350b fix: cache concatList.Size() to prevent O(N^2) evaluation time (#1291)
• 68bdd8c REPL -- cel-spec pb2 and json name support (#1294)
• d19e782 Support zero-value literals in presence test inlining and fix shadowing bugs ...
• 7c461fc Lint fixes for import (#1287)
• 09e3119 Optionally include reachable fieldpaths in prompt (#1285)
• ae49cd0 Json field names runtime support (#1286)
• 3624b64 Add checker, ast, and type-provider support for JSON names (#1283)
• Additional commits viewable in compare view