Pause render and Save Project Please!

Wondering if you guys might be able to implement a pause rendering feature into the program like most all other programs that need to render things have? I often set it to render at night and want to work in the day. It would be so key for me if I can pause the render to work on the computer during the day and start it back up at night.

Another thing would be cool that is similar related is to be able to save a project so that I can close it from where it left off rendering and start it back up. Having both pause render and save project would be ideal.

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