DEV: Print backtrace of error when plugin fails to initialize.

DEV: Print backtrace of error when plugin fails to initialize.

diff --git a/lib/plugin_initialization_guard.rb b/lib/plugin_initialization_guard.rb
index 42c1bda..8b5935d 100644
--- a/lib/plugin_initialization_guard.rb
+++ b/lib/plugin_initialization_guard.rb
@@ -42,6 +42,8 @@ def plugin_initialization_guard(&block)
         initialization:
 
         #{error}
+
+        #{error.backtrace.join("\n")}
       MESSAGE
     end
     exit 1

GitHub sha: 4065cd19