CABAC now decodes fixed-length bypass codes in one step
add coefficient decoding comments
reorder bitfield members
reorder bitfield members
reorder bitfield members
get PredMode for coefficient scan order only for intra 4x4 and 8x8
get PredMode for coefficient scan order only for intra 4x4 and 8x8
reorder branching tree for significant coefficient flag
new method to calc significant flag context (but actually slower)
use CSB-neighbors array for significant coefficient flag
find correct ctxIdxMap row only once for each Csb
remove coded_sub_block_flag (now using coded_sub_block_neighbors)