Invalid placeholder (!version) in string

Hi,

Upon installing this module, I received this error when visiting the 'Text formats and editors' administration page:

User error: Invalid placeholder (!version) in string: PHP Typogrify Version: !version in Drupal\Component\Render\FormattableMarkup::placeholderFormat() (line 242 of /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Component/Render/FormattableMarkup.php) #0 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/includes/bootstrap.inc(582): _drupal_error_handler_real(256, 'Invalid placeho...', '/Applications/M...', 242, Array) #1 [internal function]: _drupal_error_handler(256, 'Invalid placeho...', '/Applications/M...', 242, Array) #2 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Component/Render/FormattableMarkup.php(242): trigger_error('Invalid placeho...', 256) #3 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/StringTranslation/TranslatableMarkup.php(196): Drupal\Component\Render\FormattableMarkup::placeholderFormat('PHP Typogrify V...', Array) #4 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Component/Utility/ToStringTrait.php(15): Drupal\Core\StringTranslation\TranslatableMarkup->render() #5 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/twig/twig/lib/Twig/Environment.php(467) : eval()'d code(77): Drupal\Core\StringTranslation\TranslatableMarkup->__toString() #6 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/twig/twig/lib/Twig/Template.php(432): __TwigTemplate_d9ba33b419251a129f0079229881e5a0ab1a02fe7c82104a8bcd03827f78045b->doDisplay(Array, Array) #7 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/twig/twig/lib/Twig/Template.php(403): Twig_Template->displayWithErrorHandling(Array, Array) #8 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/twig/twig/lib/Twig/Template.php(411): Twig_Template->display(Array) #9 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/themes/engines/twig/twig.engine(64): Twig_Template->render(Array) #10 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Theme/ThemeManager.php(384): twig_render_template('core/themes/cla...', Array) #11 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(437): Drupal\Core\Theme\ThemeManager->render('item_list', Array) #12 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array) #13 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array) #14 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array) #15 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array) #16 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array) #17 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array, false) #18 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(226): Drupal\Core\Render\Renderer->render(Array, false) #19 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/Renderer.php(582): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() #20 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(227): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #21 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(117): Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch)) #22 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch)) #23 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher)) #24 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher)) #25 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/symfony/http-kernel/HttpKernel.php(156): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent)) #26 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/symfony/http-kernel/HttpKernel.php(68): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #27 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #28 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #29 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/modules/ban/src/BanMiddleware.php(50): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #30 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\ban\BanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #31 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #32 /Applications/MAMP/htdocs/au.gov.dta.test/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #33 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/core/lib/Drupal/Core/DrupalKernel.php(657): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #34 /Applications/MAMP/htdocs/au.gov.dta.test/docroot/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #35 {main}.

This seems to be due to use of the '!' placeholder instead of '@'.

I am working on a patch and will submit shortly.

Cheers,
Jesse.