Fix Zend/Barcode composer.json to require zendframework/zend-validator.

We also explain why zendframework/zend-servicemanager is suggested.

zendframework/zend-validator is needed because all barcodes are validated using
Zend\Validator\Barcode prior to drawing.

zendframework/zend-servicemanager is suggested because it’s needed when using
the factory methods to create or render a barcode.
Merge branch 'hotfix/#6310-fix-#6293-zend-barcode-dependencies'

Close #6310
Close #6293
Add body to curl DELETE request if one is specified. The header will be there. Fixes issue #6315 (https://github.com/zendframework/zf2/issues/6315)
Merge branch 'hotfix/#6318-fix-#6315-add-body-to-curl-delete-request'

Close #6318
Close #6315
[BUGFIX] missing Zend XML-RPC support library
Merge branch 'hotfix/#6170-zend-xml-dependency-for-zend-xmlrpc'

Close #6170
Fix for odd php-cs-fixer finds
Merge branch 'hotfix/#6462-fix-phpcs-reported-errors'

Close #6462
Use composer's autoload-dev feature
Merge branch 'feature/#6205-autoload-dev'

Close #6205
Fixes 6253 updated regex to properly respect heredoc
fix coding standard
coding standard fix
coding standard fix
Merge branch 'hotfix/#6283-fix-#6253-zend-code-methodgenerator-catch-heredoc'

Close #6283
Close #6253
Fixes issue #4747 - FileGenerator now properly generates files.
cleaning up var_dump
adding test case for appending to File as this is documented
coding standard fix
Merge branch 'hotfix/#6302-fix-#4747-file-generator-properly-generates-files'

Close #6302
Close #4747