* merging change into main ([dd678cb](https://github.com/svange/openbrain/commit/dd678cb56e798dc65ca54e9b8682f7798856040e)) * removing context from callback_handler. ([900ce00](https://github.com/svange/openbrain/commit/900ce006b79ca2ad174e982710d7416a0e330f2e))