add PhpClientPoeditor\Options\Strategy
add savePath property to PhpClientPoeditor\Options\Strategy
move extension and savePath to StrategyOptions
remove obsolete PhpClientPoeditor\Strategy\AbstractStrategy
remove dependency for PhpClientPoeditor\Strategy\AbstractStrategy
remove obsolete strategy factories
use StrategyOptions in PhpClientPoeditor\Service\ClientService
change configuration style
Update README.md