use `copy` instead of `cp` for Windows build stage script

17 jobs for 1.1.1 in 5 minutes and 48 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #55339
Linux
build-2.7-linux

00:01:19

passed #55340
Apple
build-2.7-macos

00:02:30

passed #55337
Linux
build-3.5-linux

00:01:23

passed #55338
Apple
build-3.5-macos

00:02:31

passed #55336
VS2017
build-3.6-VS2017

00:01:48

 
  Test
passed #55344
Linux
test-2.7-linux

00:00:07

passed #55345
Apple
test-2.7-macos

00:00:11

passed #55342
Linux
test-3.5-linux

00:00:08

passed #55343
Apple
test-3.5-macos

00:00:12

passed #55341
VS2017
test-3.6-VS2017

00:00:33

 
  Deploy
passed #55349
Linux
deploy-2.7-linux

00:00:01

passed #55350
Apple
deploy-2.7-macos

00:00:02

passed #55347
Linux
deploy-3.5-linux

00:00:01

passed #55348
Apple
deploy-3.5-macos

00:00:01

passed #55346
VS2017
deploy-3.6-VS2017

00:00:04

passed #55352
Linux
deploy-documentation

00:00:10

passed #55351
Linux
deploy-sdist

00:00:12