[changelog] adding changelog.md file for 1.0.0

5 jobs for v1.0.0 in 20 minutes and 55 seconds (queued for 5 seconds)
latest
Status Job ID Name Coverage
  Build
passed #161104
docker
build_linux_36

00:06:26

passed #161105
macosx
build_macosx_36

00:06:41

 
  Browser Tests
passed #161106
docker
browser_test

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  Deploy
passed #161107
docker
deploy_stable

00:04:56

 
  Pypi
passed #161108
docker
pypi

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