Update Client.php

soapVersion is not reachable, thanks to strtolower($key) :)
Remove private variables from AbstractControllerTestCase.
Fixing typehint on fluent interface
Fix generating array with unsorted keys
set 0 as header value (issue #4583)
Merge branch 'hotfix/strategy-enabled-interface-hints' of https://github.com/Ocramius/zf2 into bugfix/4556
Merge branch 'bugfix/4556'
Close #4556
Initial commit of Select combinations
PR #4588
Merge branch 'issue_4583' of git://github.com/rodsouto/zf2 into rodsouto-issue_4583
PR #4588 merged to master
Merge branch 'rodsouto-issue_4583'
PR #4553
Merge branch 'patch-3' of git://github.com/spiffyjr/zf2 into spiffyjr-patch-3
PR #4553 merge to master
Merge branch 'spiffyjr-patch-3'
Merge pull request #4543 from Goram/master

soapVersion key is not reachable
Merge branch 'hotfix/4543'

Close #4543
Merge pull request #4561 from noopable/hotfix/post-redirect-get-controller-redirect

Fix the controller plugin PostRedirectGet wrong redirection (in MVC)
Merge branch 'hotfix/4561'

Close #4561
Merge pull request #4566 from ftdebugger/zend_code_value_generator_issue

Fix generating array with unsorted keys
Merge branch 'hotfix/4566'

Close #4566
Zend\Db\Sql\Select Union Support
Added unit tests
Completed the modifier functionality
Merge branch 'feature/db-sql-select-union' of https://github.com/ralphschindler/zf2 into ralphschindler-feature/db-sql-select-union