Release v0.11.0

The v0.11.0 release introduces a sub-module for the server package used for conformance testing the cel-go package.
The sub-module has been split out to remove the gRPC dependency related to the core CEL package and to reduce the
overall size of the library import for users. Additionally, the CEL core dependencies have been vendored into the repo.

In addition this release features a handful of fixes and improvements for heterogenous equality, code health, and runtime
cost calculations.

Features

• Vendored dependencies and conformance sub-module [#508]

Fixes

• Fixes for map and list indexing across numeric types [#510]
• Fix formatting and spelling lint [#511]
• Use a zero-size type for variable-free activations [#513]
• Simplify definition of cel.Source [#512]
• Put cel package examples in package cel_test [#515]
• Fix runtime cost ref.Val stack [#517]

New Contributors

• @kortschak made their first contribution in #511

Full Changelog: v0.10.1...v0.11.0