1.6

Fixes bug: False positives from inlined GetBit in BITS.DoesTileIntersectData
Fixes bug: False positives from BITS extent check. (now uses same geometry test as LBITS)

1.5

New parameter: img_unshd_threshold. Previously, RGB channel and alpha channel thresholds both worked off the alpha threshold value, which was limited because it only worked if the shadow pixel alpha values were equal to the actual data pixel's alpha values. This allows RGB and alpha thresholds to be set independently.

1.4

Bugfix for issue where old cache did not get purged. Fixes logic error in key compare, and also now does not mutate array while enumerating it.

1.3

Updated release with serialization remainder chunk handling bugfix.

1.2

No core code changes. Doc updates and repo now includes png_zlib_worker_min.js for convenience.

1.1

Most all GET ops and processing now can happen in a background web worker thread (if enabled), less blocking on main thread.

Inlining and better loop unrolls for faster bit ops. (main thread / normal use)

Improved logging.

Moved try/catch out of main functions so doesn't block V8 optimizations.

Added old cache detection and purging.

Bugfix for max idx z constraint not being enforced.

1.0

Initial release.