DEV: Pin version for Discourse <3.5.0.beta1-dev (#36)

Author: davidtaylorhq

.discourse-compatibility

@@ -1,3 +1,4 @@
+< 3.5.0.beta1-dev: 68ad17e19c5f13e9f3984b9345739362460a3a4e
 < 3.4.0.beta2-dev: 1b08ff008ef9b93740395f711ee8d36469baa672
 < 3.4.0.beta1-dev: 4bac305f75e10e2e921d0cbc32f0e413cfd36160
 < 3.3.0.beta1-dev: b1111aaa0bb6da0cfa8ccc4dceae3ebc7b826b45