0.3.7

• The issue with integer overflow with get_linecount of pypairix is now fixed. (no need to re-index).
• Fixed issue where autoflip causes segmentation fault or returns an empty result on some systems. This affects pairix -Y, pairix -a, pypairix.check_triangle() and pypairix.querys2D(). It does not affect the results on 4DN Data Portal.