Limit size of dt in simulations/interactions (fixes #68)
Limit size of dt in simulations/interactions (fixes #68)

tgdavies/codeworld,xwysp/codeworld,three/codeworld,xwysp/codeworld,parvmor/codeworld,pranjaltale16/codeworld,Ye-Yong-Chi/codeworld,Ye-Yong-Chi/codeworld,tgdavies/codeworld,venkat24/codeworld,nomeata/codeworld,parvmor/codeworld,tgdavies/codeworld,Ye-Yong-Chi/codeworld,nomeata/codeworld,alphalambda/codeworld,stefan-j/codeworld,alphalambda/codeworld,parvmor/codeworld,nomeata/codeworld,alphalambda/codeworld,d191562687/codeworld,d191562687/codeworld,venkat24/codeworld,google/codeworld,google/codeworld,pranjaltale16/codeworld,three/codeworld,google/codeworld,venkat24/codeworld,stefan-j/codeworld,pranjaltale16/codeworld,stefan-j/codeworld,d191562687/codeworld,xwysp/codeworld,three/codeworld