Fix zlib header import

5 jobs for master in 9 seconds
Status Job ID Name Coverage
  Test
canceled #121167257
Lint

00:00:09

canceled #121167258
Test Python 2

00:00:09

canceled #121167259
Test Python 3

00:00:08

 
  Deploy To Py Pi
canceled #121167260
Deploy to PyPI

 
  Deploy Linux Wheels
canceled #121167262
Deploy Linux Wheels