Fixed the proxy-manager version constraint
Fixed the AuthenticationProviderInterface alignment
minor #12776 [2.3] Fixed the proxy-manager version constraint (GrahamCampbell)

This PR was merged into the 2.3 branch.

Discussion
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[2.3] Fixed the proxy-manager version constraint

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

##### This pull request fixes the `ocramius/proxy-manager` version constraint in the 2.3 branch.

`"~0.3.1"` is far cleaner than `">=0.3.1,<0.4-dev"`, and does the same thing.

Commits
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ed6c50f Fixed the proxy-manager version constraint
[Filesystem] symlink use RealPath instead LinkTarget
bug #12761 [Filesystem] symlink use RealPath instead LinkTarget (aitboudad)

This PR was squashed before being merged into the 2.3 branch (closes #12761).

Discussion
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[Filesystem] symlink use RealPath instead LinkTarget

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

Commits
-------

a8b8d33 [Filesystem] symlink use RealPath instead LinkTarget
minor #12917 [2.3] [Security] Fixed The AuthenticationProviderInterface Alignment (GrahamCampbell)

This PR was merged into the 2.3 branch.

Discussion
----------

[2.3] [Security] Fixed The AuthenticationProviderInterface Alignment

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

##### This pull request fixes the AuthenticationProviderInterface alignment.

Everything was indented by one too many spaces.

Commits
-------

1270327 Fixed the AuthenticationProviderInterface alignment
[SecurityBundle] Firewall providers building - code cleaning
minor #12400 [SecurityBundle] Firewall providers building - code cleaning (blanchonvincent)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #12400).

Discussion
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[SecurityBundle] Firewall providers building - code cleaning

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | https://github.com/symfony-fr/symfony-docs-fr/pull/609

It seems old code to build firewall provider still exist in the SecurityExtension. The `In-Memory` and `Entity` providers are handled in their own factories.

Commits
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c3c904d [SecurityBundle] Firewall providers building - code cleaning
fix session restart on PHP 5.3

this also removes some useless code
bug #12961 fix session restart on PHP 5.3 (Tobion)

This PR was merged into the 2.3 branch.

Discussion
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fix session restart on PHP 5.3

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no
| Fixed tickets | #12562
| License       | MIT
| Doc PR        | -

this also removes some useless code

Commits
-------

b9d3c92 fix session restart on PHP 5.3
remove short array syntax

The short array syntax was introduced in PHP 5.4 and therefore leads
to failing tests when executed in PHP 5.3 environments.
minor #12962 [SecurityBundle] remove short array syntax (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[SecurityBundle] remove short array syntax

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

The short array syntax was introduced in PHP 5.4 and therefore leads
to failing tests when executed in PHP 5.3 environments.

Commits
-------

697ce4d remove short array syntax
[FrameworkBundle] Removed unused code from cache clear command