0.13.0: Add dynamicConstantNames configuration

Add TYPO3 specific constants to the dynamicConstantNames
parameter of phpstan.
The constants are now marked as dynamic to prevent errors like

```
Strict comparison using === between 'BE' and 'BE' will always
evaluate to true.
```

Release 0.12.1 wich is the same as 0.13.1

The version number has been increased by accident as it is was in sync with phpstan before.
The 0.13.1 is now kept but is the same as 0.12.1

Release 0.12.0

Merge pull request #16 from sascha-egerer/feature/phpstan-0-12-compat…

Release 0.11.0

Merge pull request #12 from sascha-egerer/feature/phpstan-0-11-compat…

Release 0.10.1

Merge pull request #9 from Baachi/feature/extension-insaller

Add support for extension installer

0.10.0: Merge pull request #5 from sascha-egerer/bugfix/0-10-compatibility

[BUGFIX] Update reflections to be compatible with 0.10 interfaces