Merge branch 'master' of https://github.com/plotly/python-api into tls.embed_with_URLs

merge master from 'plain-message-fix'
Merge branch 'master' of https://github.com/plotly/python-api into tls.embed_with_URLs

merge document-stream branch
Version 1.0.34 consolidating

- plotly/plain-message-fix
- plotly/document-stream
- plotly/tls.embed_with_URLs
v.1.0.34, consolidating last 3 commits (ran ./makefile)
Merge pull request #41 from plotly/v1.0.34_merges

V1.0.34 merges