This was due to me not calling `Py_INCREF` and `Py_DECREF` when I needed to.
1.2.1
Removed unused code in cGrailSort.pyx and fixed memory leak in grailsort.pyx
1.2.0
Fixed compilation issues on Mac (by changing the backend to my fork of the original GrailSort, [GrailSort-Maintained](https://github.com/gaming32/GrailSort-Maintained)).
Added `grailsort_common(arr, buff)` to allow you to specify your own external buffers.
1.1.1
Changed backed to MusicTheorist/Grail-Sort-Refactored (was Mrrl/GrailSort)