Added write support for 1.5.x. Added version module.
0.4.1
Fixed segfault with openjpeg 1.x when rlevel=-1
0.4.0
Added append method.
0.3.2
Fixed test bug where missing Pillow package caused test failures.
0.3.1
Exposed mantissa, exponent, and guard_bits fields in QCC and QCD segments. Exposed layers and code_block_size in COD segment. Exposed precinct_size in COC segment.