Add .discourse-compatibility for v2.5.x stable branch (#92)

Add .discourse-compatibility for v2.5.x stable branch (#92)

Co-authored-by: Richard richard@discoursehosting.com

diff --git a/.discourse-compatibility b/.discourse-compatibility
new file mode 100644
index 0000000..8935c7a
--- /dev/null
+++ b/.discourse-compatibility
@@ -0,0 +1 @@
+2.6.0.beta0: 613267c3a2993bb8c3af7d61b539ba4a070a6d48

GitHub sha: faef0d63

This commit appears in #92 which was merged by eviltrout.