[QGIS-Developer] Delaying 3.10.1?

[Even Rouault]

> Ok, thanks to a **marathon** debugging effort from Even, we have a fix
> inbound -- https://github.com/OSGeo/PROJ/pull/1746

Now merged in PROJ master.
Cherry-picked in PROJ 6.2 branch per
https://github.com/OSGeo/PROJ/commit/bce4b158ab5f7d146de8e8fc98df4612dc8c2c9e

> 
> Looks like we'll need to cherry-pick the PROJ fix into the osgeo4w
> build in order to resolve the blocking issue in QGIS.

I would also suggest applying commit
https://github.com/OSGeo/gdal/commit/bec5fbd4fbf5d69a8386b920f0dd6d951eceb117
(which applies to GDAL 3.0 branch)
on top of the 3.0.2 release
This fixes a subtle multi-threading bug that causes memory corruption and
could likely be the source of crashes at random times

Even

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