Toshiyasu Sugio authored Mar 01, 2019 and David Flynn committed Apr 16, 2019

This commit introduces zero run length coding for attribute residual
value along with an eq1 flag which indicates if residual value is equal
to 1 based on the current residual coding specification. In zero run
length coding, the number of zeros prior to each residual value is
counted as zerorun, and then zerorun is encoded instead of encoding
sequence of 0s