diff --git a/composer.json b/composer.json
index 59757ad..d34054d 100644
--- a/composer.json
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diff --git a/composer.lock b/composer.lock
index c8f09f8..89831c2 100644
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@@ -1295,38 +1058,38 @@
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@@ -1338,12 +1101,18 @@
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+                "doctrine/inflector": "^1.3",
+                "ext-mbstring": "*",
+                "michelf/php-markdown": "^1.8",
+                "netcarver/textile": "^3.6",
+                "php": "^7.2",
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-                "symfony/process": "~2.3",
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-                "twig/extensions": "~1.0",
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+                "symfony/config": "^4.1",
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@@ -1457,10 +1223,17 @@
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-                "symfony/css-selector": "~2.6",
-                "symfony/dom-crawler": "~2.6"
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+            "suggest": {
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+                "ext-posix": "If you have PCNTL, you'll want the POSIX extension as well."
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@@ -1469,8 +1242,7 @@
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@@ -1501,7 +1273,7 @@
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@@ -1538,120 +1310,33 @@
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@@ -1659,7 +1344,7 @@
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@@ -1686,41 +1371,52 @@
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+                "symfony/lock": "~3.4|~4.0",
+                "symfony/process": "~3.4|~4.0"
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@@ -1747,37 +1443,104 @@
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+                "psr/container": "^1.0"
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+                "psr/container": "When using the Service contracts",
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+                    "email": "p@tchwork.com"
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+            "homepage": "https://symfony.com",
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+                "contracts",
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+                "interfaces",
+                "interoperability",
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@@ -1804,43 +1567,53 @@
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                 "symfony/expression-language": "For using expressions in service container configuration",
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@@ -1867,31 +1640,35 @@
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@@ -1900,7 +1677,7 @@
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@@ -1927,30 +1704,30 @@
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@@ -1977,29 +1754,29 @@
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