reroll renamed -> research
spore damage increased 25%
ice IX has it's damage buffed by 50%, and freeze effect lasts 2s (up from 1s)
ice IX is no longer a gun
but you can still get it for nano-scale field (and it's pretty strong)
tech: heavy water was removed
tech: correlated damage - duplication chance also gives % damage
(also added some minor nerfs to other duplication tech for balance)
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