loongson/pypi: links for digital-comms

loongson/mirror digital_comms-0.1.6.tar.gz
loongson/mirror digital_comms-0.1.5.tar.gz
loongson/mirror digital_comms-0.1.4.tar.gz
loongson/mirror digital_comms-0.1.3.tar.gz
loongson/mirror digital_comms-0.1.2.tar.gz
loongson/mirror digital_comms-0.1.1.tar.gz