docs: update calendar, add news item, and link releases notes for 19.3.5

Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4121>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4121>
This commit is contained in:
Eric Engestrom
2020-03-09 23:40:40 +01:00
committed by Marge Bot
parent b06471b77d
commit 461ee85248
3 changed files with 887 additions and 297 deletions

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