Fatal Error from FormTypeImplicit when using method call from variable (

php-translation#105)

* Issue php-translation#104 : calling method contained in variable (in Form context) causes parsing process to raise "Catchable Fatal Error: Object of class PhpParser\Node\Expr\Variable could not be converted to string"

* Issue php-translation#104 : code style fix

* Issue php-translation#104 : code style fix

* changes requested by @Nyholm during review

Prepare for 1.5.1 (php-translation#103)

Added changelog (php-translation#100)

Prepare for 1.4.0 (php-translation#75)

Allow Symfony 2.7

Adding support for @desc annotation (php-translation#63)

* Adding support for @desc annotation

* style fixes

* Removed strict types

* Added changelog

* Added twig filter

* Applied changes from StyleCI

* Minor

* Test on twig 1

Merge pull request php-translation#54 from php-translation/patch-visi…

…tor-factory

Using a TwigVisitorFactory

Prepare for 1.1.2 (php-translation#45)

* minor cleanups

* Added changelog

Twig 1 bugfixes (php-translation#38)

* Twig 1 bugfixes

* Bugfixes

Prepare 1.1 (php-translation#37)

* Removed some code that was not associated with a release

* mnor

* Added factor for twig

* cs

* Bugfix

* removed debug code