**Full Changelog**: https://github.com/salute-developers/smart_app_framework/compare/v2.0.0rc14...v2.0.0rc15
* [revert all experiments with different json libraries](https://github.com/salute-developers/smart_app_framework/commit/8961bacfe280ef3c7147a81397f2bd5201bb17d5)
* [do cache for get_app_config](https://github.com/salute-developers/smart_app_framework/commit/7189b4b80ecc8a6d31d8d9c41efc8135b010f854)