Changelog update and versions bump

This fixes #21004 and #27307 on our side.

When checking our .mar and .exe files for signing errors we keep the
checked files around until the whole check is done. This essentially
leads to doubling the amount of disk space for them during that time,
which could make the difference between someone being able to check
them successfully or not.

There is actually no need, though, to keep all the binaries until the
whole signature check is done and we remove the checked bundle from now
on immediately after a particular check finished.

Changelog update and versions bump

Now that https://bugzilla.mozilla.org/show_bug.cgi?id=1547519 got
backported (to esr68.2.0) we can re-enable jemalloc for Windows users.

David Fifield authored Oct 14, 2019 and Georg Koppen committed Oct 17, 2019

This version fixes a PROXY-ERROR panic reported in
https://bugs.torproject.org/32056.

This reverts commit 268f36f0.

Changelog update and versions bump

We use /proc/cpuinfo to check for SSE2 support, however on some systems
it isn't readable by ordinary users, so we just assume that SSE2 is
available in this case.

Nick Mathewson authored Aug 28, 2019 and boklm committed Oct 07, 2019

If you don't take this approach with unicode curly quotes,
shellcheck thinks that maybe you meant to use "" instead.

Nick Mathewson authored Aug 28, 2019 and boklm committed Oct 07, 2019

Fixes bug 24755.

Thanks cypherpunk.

Changelog update and versions bump