Always check files recompilation by content (#1743)
Always check files recompilation by content (#1743)

Fix #1439
gauravtiwari/webpacker,rossta/webpacker,rails/webpacker,rossta/webpacker,gauravtiwari/webpacker,rails/webpacker,gauravtiwari/webpacker,rossta/webpacker,rossta/webpacker