add deprecation log (#12618)
Add deprecation message for Process
[Stopwatch] added __toString on StopwatchEvent
Adjust error_reporting to allow deprecation messages for 3.0
minor #12705 Adjust error_reporting to allow deprecation messages for 3.0 (davidfuhr)

This PR was merged into the 2.7 branch.

Discussion
----------

Adjust error_reporting to allow deprecation messages for 3.0

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | #12623
| License       | MIT
| Doc PR        |

Commits
-------

11ba901 Adjust error_reporting to allow deprecation messages for 3.0
minor #12696 [2.7][Process] Add deprecation message for component (romainneutron)

This PR was merged into the 2.7 branch.

Discussion
----------

[2.7][Process] Add deprecation message for component

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

Commits
-------

b9a6b71 Add deprecation message for Process
minor #12650 add deprecation log (#12618) (phramz)

This PR was merged into the 2.7 branch.

Discussion
----------

add deprecation log (#12618)

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | #12618
| License       | MIT
| Doc PR        |

Commits
-------

7d9afd7 add deprecation log (#12618)
feature #12666 [Hackday][Stopwatch] added __toString on StopwatchEvent (damienalexandre)

This PR was merged into the 2.7 branch.

Discussion
----------

[Hackday][Stopwatch] added __toString on StopwatchEvent

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #12152
| License       | MIT
| Doc PR        | no

This allow to just print the events in a log or something.

```php
$stopwatch = new Stopwatch();
$event = $stopwatch->start('foo', 'cat');

echo $event; // cat: 0.00 MiB - 0 ms
```

Commits
-------

0b88a23 [Stopwatch] added __toString on StopwatchEvent
[Validator] Added a deprecation note about setPropertyAccessor #12698