Run into issue since ericmartel/codeception-email v1.0.3

[fnagel]

Since ericmartel/codeception-email 1.0.3 I'm getting an error thrown when using $I->seeInOpenedEmailRecipients();. Works as expected when downgrading to 1.0.2

Test  ../../../tests/acceptance/HomepageCest.php:confirmHomepageForm

  [Error] Call to undefined method Codeception\Module\MailHog::assertStringContainsString()


Scenario Steps:

 4. $I->seeInOpenedEmailRecipients("jd@acme.local") at ../../../tests/acceptance/HomepageCest.php:77
 3. $I->openNextUnreadEmail() at ../../../tests/acceptance/HomepageCest.php:76
 2. $I->fetchEmails() at ../../../tests/acceptance/HomepageCest.php:75
 1. // As a potential user

#1  /var/www/xyz/vendor/ericmartel/codeception-email/src/TestsEmails.php:333
#2  /var/www/xyz/vendor/ericmartel/codeception-email/src/TestsEmails.php:307
#3  Codeception\Module\MailHog->seeInOpenedEmailRecipients
#4  /var/www/xyz/tests/_support/_generated/AcceptanceTesterActions.php:4412
#5  /var/www/xyz/tests/acceptance/HomepageCest.php:77
#6  HomepageCest->confirmHomepageForm