2.4.2

• Added error handling for GRPC::Core::CallError, a low-level error in the grpc library that does not inherit from StandardError. [#59]
• Removed Thread.abort_on_exception = true. Exceptions should be handled by gruf or the application, and should not cause the server process to crash. [#59]
• Added guard for size of trailing metadata attached to grpc call. The default max for http2 trailing metadata in the gRPC C library is 8kb. If we go over that limit (either through custom metadata attached to the error by the application, or via the error payload encoded by the error serializer), the gRPC library will throw RESOURCE_EXHAUSTED. Gruf now detects this case, and attempts to prevent it by logging the original error and substituting it with an internal error indicating that the metadata was too large. [#60]
• Truncate stack trace in error payload to help avoid overflowing the trailing metadata. Added backtrace_limit configuration parameter, which defaults to 10.[#60]