close #293

if the target is self destroyed, it should not count in the return value

except in field::process

round decimals correctly in scripts
close #264

conditionally-explicit constructor of std::tuple is a c++17 library feature

should not activate in EVENT_SUMMON/EVENT_FLIP_SUMMON/EVENT_SPSUMMON

see Fluorohydride/ygopro-scripts@a2e1b60b29076c0f938f4af2a80cc0171e3644f6

close Fluorohydride/ygopro#2238

see 90a07a09

triggered by event raised during adding chains should activate after chain end

fix #215