------------------- * Environment var for developer mode with more verbose logging;
0.0.44
------------------- * Bugfix for circular deps; * Add events for various literal comprehensions;
0.0.43
------------------- * Bugfix to ensure that patched sys.settrace does no override behavior on new threads; * Bugfix to ensure that custom finder does not override behavior on new threads;
0.0.41
------------------- * Fix degraded performance of deepcopy when ast nodes have parent pointers;
0.0.39
------------------- * Use Python tokenizer for syntax extensions;