Uniformize the output.
Fix symbol check.
update readme
Fix compile warnings "format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 2 has type ‘size_t'".
Use new gprof2dot.py JSON format.

Instead of reaching inside gprof2dot internal implementation.
Cleanup.
Simple benchmark.
Aggregate duplicate callchains.
Improve benchmark.
Don't dump stack backtrace for deallocation.

Not useful.
Use a gzip subprocess.

For parallelism.
Remove dead code.
Cache results of struct.calcsize()
Display progress indicator.
Allow to skip maximum heap search.

A temporary hack until performance is fixed.
Fix threshold reporting.
Assert one thing at a time.
Handle global constructors/destructors better.
Improve instructions.
Cosmetic cleanups.