release 0.8.2:

- update changelog;
- update TFW_VERSION;

Merge pull request #2491 from tempesta-tech/symstu/release-0.8.1

Release 0.8.1: updated changelog, kernel hash, app version

update changelog

Merge pull request #2092 from tempesta-tech/release-0.7-port-frang

New default frang limits - port 0.7

Merge pull request #2092 from tempesta-tech/release-0.7-port-frang

New default frang limits - port 0.7

Merge pull request #1903 from tempesta-tech/dp-1729-forbid-lc-headers-h2

Make HTTP/2 parser reject upper-case headers

Merge pull request #1903 from tempesta-tech/dp-1729-forbid-lc-headers-h2

Make HTTP/2 parser reject upper-case headers

Merge pull request #1577 from tempesta-tech/dkms_path_fix

dkms_build modules path fix

Merge pull request #1427 from tempesta-tech/ik-fix-systemd-start-issu…

…es-0.6

backport #1426 to 0.6

Merge pull request #1427 from tempesta-tech/ik-fix-systemd-start-issu…

…es-0.6

backport #1426 to 0.6