Bump version: 2.5.6 → 2.5.7

2 jobs for master in 7 minutes and 13 seconds (queued for 20 seconds)
Status Job ID Name Coverage
  Test Python
passed #311539137
pypy3_6_unit_test

00:07:12

93.0%
passed #311539123
python3_6_unit_test

00:02:11

93.0%