add eventbus to be able to listen for events like ready
add queue for incoming packets to be able to wait for specific ones in a method
add more helpers for unpacking and packing numbers
add tox.ini for linting with flake8
add LICENSE
add CI
fix various small mistakes which change the outcoming bytes and thus break stuff
fix ConnectionError overwriting the builtin one, rename to ConnectionException
fix banner image not being shown on PyPi by using an external url
improve typing