sequential send/receive appears to work

comIF/obsw_com_interface.py

comIF/obsw_dummy_com_if.py

comIF/obsw_serial_com_if.py

obsw_tmtc_client.py

sendreceive/obsw_sequential_sender_receiver.py

sendreceive/obsw_tm_listener.py

tc/obsw_pus_tc_packer.py

tm/obsw_pus_tm_base.py

utility/obsw_tmtc_printer.py