bug #93 Allow psr/log 2 and 3 (derrabus)

This PR was merged into the 3.2 branch.

Discussion
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Allow psr/log 2 and 3

Commits
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dd917fe Allow psr/log 2 and 3

Author: derrabus

composer.json

@@ -27,7 +27,7 @@
         "doctrine/common": "^2.2|^3",
         "doctrine/persistence": "^1.3.3|^2",
         "doctrine/dbal": "^2.13.1|^3.1",
-        "psr/log": "~1.0"
+        "psr/log": "^1|^2|^3"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Security\\Acl\\": "" },