Add post height detective

Add post height detective

diff --git a/.gitmodules b/.gitmodules
index 4cbd340..6ffb389 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -665,3 +665,6 @@
 [submodule "themes/discourse-totp-markdown"]
 	path = themes/discourse-totp-markdown
 	url = https://github.com/discourse/discourse-totp-markdown
+[submodule "themes/discourse-post-height-detective"]
+	path = themes/discourse-post-height-detective
+	url = https://github.com/davidtaylorhq/discourse-post-height-detective
diff --git a/themes/discourse-post-height-detective b/themes/discourse-post-height-detective
new file mode 160000
index 0000000..ace7f38
--- /dev/null
+++ b/themes/discourse-post-height-detective
@@ -0,0 +1 @@
+Subproject commit ace7f38efd70529d0fb1e3508565de3e6226c1d1

GitHub sha: 1d0b0d76d32f52a28cea145c467cc677d47a26b2