Add draft release notes for 4.0
Review Request #10535 — Created April 16, 2019 and discarded — Latest diff uploaded
This change adds release notes for the commits currently on
release-4.0.x. The DVCS section feels like it probably needs to be
fleshed out a lot but I'm struggling on how to write it.
Built HTML and viewed results.
| AUTHORS |
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| docs/releasenotes/4.0-beta-1.rst |
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| docs/releasenotes/index.rst |
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