Multiple festivals (x25, x100, ...)

[Tomáš Arcanis Jílek]

As proposed in link below, when player owns paragon upgrade which allows him to stack festivals in serial manner, in case of big number of resources, you spend much time only by clicking.

I dont know if is it a case for majority of players, please decide.

https://www.reddit.com/r/kittensgame/comments/3rn3oz/suggestion_shift_click_on_hold_festival/

[Ross Smith]

I've not progressed far enough to have a need for a x100 button, but I've reset many times and probably approaching the need for a x25 button. I don't see why we shouldn't add this.

[freeroot]

I believe that x10 is already cool.

See pull request #192