SSI support
Disallow abstract definitions from doctrine event listener registration
[HttpFoundation] ResponseHeaderBag::clearCookie now accepts secure/httpOnly
Add missing dot at the end of an exception message
Added verbosity methods
Added line feed to container alias description (text descriptor)
New service to simplify password encoding
[Form] Check if IntlDateFormatter constructor returned a valid object before using it
remove the scope from the output of the container:debug command
ISSUE #11300: Improve Routing Syntax Import Error

modified FileLoaderLoadException message to present the previous (Parse)Exception first
Add test and small code fix
[2.3][Form] Cleanup & fix phpdocs
minor #11274 Added verbosity methods to NullOutput (WouterJ)

This PR was merged into the 2.4 branch.

Discussion
----------

Added verbosity methods to NullOutput

These 4 methods were not added to the OutputInterface because of BC, but they should still be implemented in all classes which implement that interface. Otherwise we have to do nasty tricks...

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

0459249 Added verbosity methods
[Upgrade] Fixed markdown syntax
minor #11359 [Upgrade] Fixed markdown syntax (lyrixx)

This PR was merged into the 2.3 branch.

Discussion
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[Upgrade] Fixed markdown syntax

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        |

Commits
-------

deb70c7 [Upgrade] Fixed markdown syntax
[HttpFoundation] Fix wrong assertion in Response test
minor #11358 [2.3][Form] Cleanup & fix phpdocs (stloyd)

This PR was merged into the 2.3 branch.

Discussion
----------

[2.3][Form] Cleanup & fix phpdocs

| Q             | A
| ------------- | ---
| Bug fix?      | kinda
| New feature?  | no
| BC breaks?    | no
| Tests pass?   | yes
| License       | MIT

This PR was done mostly cause of reports about invalid/not supported types/variables in phpstorm/scrutinizer-ci, and after I started fixing I noticed more problems in those phpdocs so I have cleanedup them a bit.

Commits
-------

a67bc76 [2.3][Form] Cleanup & fix phpdocs
fix issue #8171 on configuration tree for twig extension -- pairing up with @cordoval
added regression test
bug #9719 [TwigBundle] fix configuration tree for paths (mdavis1982, cordoval)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #9719).

Discussion
----------

[TwigBundle] fix configuration tree for paths

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #8171
| License       | MIT
| Doc PR        | na

This is a joint effort with @mdavis1982 and @cordoval :baby: pairing up and warming for hacking day in Warsaw

Commits
-------

9aa88e4 added regression test
4201d41 fix issue #8171 on configuration tree for twig extension -- pairing up with @cordoval