Merge branch '4.3' into 4.4

* 4.3:
  [Twig] Remove dead code
  Add gitignore file for Symfony 4.3
  Add gitignore file for Symfony 3.4
  [Inflector] Add .gitignore file
  [Messenger] Fix exception message of failed message is dropped on retry
  Add default value for Accept header
  [HttpClient] Add .gitignore file
  [Finder] Adjust regex to correctly match comments in gitignore contents
  [Security] Removed unused argument in Test
  [Console] Get dimensions from stty on windows if possible
  [Inflector] add support 'see' to 'ee' for singularize 'fees' to 'fee'

Author: fabpot

.gitignore

@@ -0,0 +1,3 @@
+vendor/
+composer.lock
+phpunit.xml