* 3.x:
Remove obsolete code
Deprecate Environment::mergeGlobals()
Bump version
Prepare the 3.13.0 release
Fix wrong format of `Environment::VERSION_ID` constant
Fix minor things
Fix CS
Fix isset in ForLoopNode
Fix iterable return type
Improve exception expectations reliability
* 3.x:
Validate the input of CoreExtension::map()
Rename AbstractTest to ProfilerTestCase
Make data providers static
Prepare IntegrationTestCase for static data providers
This PR was squashed before being merged into the 3.x branch.
Discussion
----------
Mark implicit macro argument default values as such with an attribute in AST
This change causes no difference to compiled templates or to macro argument semantics.
Consider the following macro:
```twig
{% macro marco(po, lo = null) %}{% endmacro %}
```
With this change, the `ConstantExpression` for argument `po` will have an attribute `is_implicit`, whose value will be `true`. (Note that `lo` will not have that attribute.)
This allows node visitors to distinguish between arguments that do and those that do not have explicit default values even if the value is `null`.
This is useful for [static code analysis](https://github.com/twigphp/Twig/issues/4003).
For example, a static analysis tool might consider arguments with no explicit default value as non-optional.
Commits
-------
e83a8028 Mark implicit macro argument default values as such with an attribute in AST
* 3.x:
Deprecate some internal methods from Parser
Move code from ExtendsTokenParser to Parser
Update Node::__toString() to include the node tag if set
Fix class name
Fix error message
Fabien Potencier
Alexandre Daubois
Alexander M. Turek
Jeroen Versteeg
Jérémy Derussé