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* Fallback message filtering implemented in Python for interfaces that don't offer better accelerated mechanism.
* SocketCAN interfaces have been merged (Now use `socketcan` instead of either `socketcan_native` and `socketcan_ctypes`),
this is now completely transparent for the library user.
* automatic detection of available configs/channels in supported interfaces.
* Added synchronized (thread-safe) Bus variant.
* context manager support for the Bus class.
* Dropped support for Python 3.3 (officially reached end-of-life in Sept. 2017)
* Deprecated the old `CAN` module, please use the newer `can` entry point (will be removed in an upcoming major version)