First beta, using final-ish API.
First working (but definitely pre-release) version.
- switched code-generation to Amazon's (semi-official) Smithy definitions
- switched to automated code-generation, using Amazon's (unofficial) API descriptions
- added stub classes for all AWS services
- switched to CMake build system
- added partial, hand-written, SQS service
- initial release of core components for AWS regions, endpoints and signatures (no services yet)