:bug: fix for arbitrary bitfile lengths
:bug: fix for arbitrary bitfile lengths

Before we assumed the bitfile was a multiple of 4 bytes but changes in the header can make it any length (up to the max. for the FPGA)

BBN-Q/libaps2,BBN-Q/libaps2,BBN-Q/libaps2,BBN-Q/libaps2,BBN-Q/libaps2