v0.2.6
- Fix send_variable stuck problem, reported in https://gist.github.com/geos98/a11155cde8ecdf242ed34479dedf64a6#file-exchagne_error_twice-py
- Fix failing to receive variable problem when running the task twice, reported in https://gist.github.com/geos98/a11155cde8ecdf242ed34479dedf64a6#file-exchange_error_concurrency-py
- Adjust protocol operator implementation: protect colink class handler across threads with deep copy.
- Solve read_or_wait implementation error, corrected subscription time to 0 instead of now, consistent with rust implementation: https://github.com/CoLearn-Dev/colink-sdk-rust-dev/blob/5c4ef2611e21dfe2d217e7e1bdfee9e5285a6335/src/extensions/read_or_wait.rs#L11.
- Set vtinbox http-server thread as daemon, ensure graceful exit.