refs #6564 refactored out HtmlMessageException and introduced some other exceptions instead
Revert "3581 IPv6 support"
also make sure AWS was set up correctly when launching a new instance
improved unit and integration test examples
Merge pull request #6647 from piwik/revert-6574-3581_IPv6_support

Revert "3581 IPv6 support"
 Do not store Accept-language full string, only store one detected language fixes #5365
New unit test refs #5365
Merge branch 'bugfix/5365' of github.com:piwik/piwik into bugfix/5365
Introduce new function and tests to make it clearer what's happening #5365
refs #6577 Return HTTP 204 instead of GIF for JavaScript tracking.

added a new url parameter send_image=0 to disable sending an
image and instead response with a 204 code
2.9.0-rc1
Merge pull request #6657 from piwik/bugfix/5365

 Do not store Accept-language full string, only store one detected language
2.9.0-rc2
2.9.0
refs #6577 updated changelog
fixes #6663 New command `./console core:plugin list` will list the enabled plugins, one per line, making it easy to compare the list of plugins used in two piwik installs
use HTTP 1.1
refs #6665 fix missing translation key in websites management
language update  refs #3430
Merge pull request #6668 from piwik/translationupdates

[automatic translation update] Updated 179 strings in 7 languages (fr, nl, cs, el, da, de, it)