Merge branch 'prakhar/purr-data-open_files' into emscripten

8 jobs for emscripten
Status Name Job ID Coverage
  Test
canceled debian_stretch_x86_64_deb #27567
debian stretch x86_64

canceled osx_10.11_x86_64_dmg #27571
osx v10.11 dmg

canceled osx_10.8_x86_64_dmg #27572
osx v10.8 dmg

canceled raspbian_stretch_armv7l_deb #27574
raspbian arm stretch

canceled ubuntu_14.04_i386_deb #27568
ubuntu v14.04 i386

canceled ubuntu_14.04_x86_64_deb #27569
ubuntu v14.04 x86_64

canceled ubuntu_16.04_x86_64_deb #27570
ubuntu v16.04 x86_64

canceled windows_i386_innosetup #27573
windows i386