symfony/polyfill

This PR was merged into the 1.11-dev branch.

Discussion
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add phpunit 7.2

This PR fixes support for PHPUnit 7.2 by adding a separate `TestListener` for each major PHPUnit version.

It should fix #144 and is based on #133.

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fde6fd5 Update src/Util/TestListenerForV7.php
eb96800 add phpunit 7.2

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This PR was merged into the 1.11-dev branch.

Discussion
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Redefine INTL_IDN_VARIANT_* constants on the Idn class

I'm currently working on a project where we have to deploy the application to servers with a strange configuration. The servers run php 5.6, but instead of the bundled `ext-intl` the very outdated version 1.1 of `pecl/intl` is installed.

If I install the polyfill there, the `bootstrap.php` scrit will find an already defined `idn_to_ascii` function and do nothing. This is why I'd like to force the usage of the polyfill code here.

The problem that I have is that the old `pecl/intl` does not define all constants. To be more precise, `INTL_IDNA_VARIANT_UTS46` is missing because version 1.1 did not yet support the `$variant` parameter.

In order to solve this problem for me, I have redefined all constants on the `Idn` class.

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212e135 Redefine INTL_IDN_VARIANT_* constants on the Idn class.

This PR was merged into the 1.10-dev branch.

Discussion
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Added missing polyfill for JsonException

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957cef5 Added missing polyfill for JsonException