Hi, I'm reinstalling Minecraft and the mod after needing to reinstall Windows, and I have 2 questions about the advent calendar (which looks awesome, by the way!)

1. Are the features part of the mod once it's installed, or is the advent calendar a separate file?

2. Do I need to delete and reinstall the mod every time a new feature is added?

It would be greatly appreciated if I received an answer to these questions soon.

1. No they are part of the mod but hidden till that day

2. Only if they say so on the videos 

Ok, thanks!