"MessageCommand" has been updated, allowing to merge string with value '0' correctly.
Issue #2244 has been added to CHANGELOG
E_NOTICE at "MessageCommand::generateMessageFile()" has been fixed.
Unit test "MessageCommandTest" has been created
Unit test "MessageCommandTest" has been improved.
"MessageCommand" has been updated: config file including switched from "require_once" to "require"
Unit test case "MessageCommandTest::testNoLongerNeedTranslation()" has been added.
Unit test case for issue #2244 has been added.
Unit test case for issue #1228 has been added.
Merge pull request #2246 from klimov-paul/2244-message-command-merge-with-zero

Fix for #2244: message command merge with translation value equal to '0'
Unit test "MessageCommandTest" has been fixed to not use general 'Exception' class on usage error check.
Merge branch 'master' of github.com:yiisoft/yii into fixes-2096
UPGRADE note enhanced (for #2096 and #2253).