fixed bug with unregistering dependants multiple times
fixed bug with unregistering dependants multiple times

ndimas/ractive,thomsbg/ractive,dyx/ractive,dyx/ractive,ndimas/ractive,ISNIT0/ractive,squaredup/ractive,cgvarela/ractive,pingjiang/ractive,marcalexiei/ractive,cgvarela/ractive,marcalexiei/ractive,magicdawn/ractive,pingjiang/ractive,marcalexiei/ractive,ndimas/ractive,aliprogrammer69/ractive,JonDum/ractive,heavyk/ractive,p0lax/ractive,squaredup/ractive,Rich-Harris/ractive,npmcomponent/RactiveJS-Ractive,aliprogrammer69/ractive,npmcomponent/RactiveJS-Ractive,p0lax/ractive,aliprogrammer69/ractive,pingjiang/ractive,ractivejs/ractive,cgvarela/ractive,thomsbg/ractive,dyx/ractive,heavyk/ractive,JonDum/ractive,ISNIT0/ractive,magicdawn/ractive,thomsbg/ractive,squaredup/ractive,magicdawn/ractive,ractivejs/ractive,Rich-Harris/ractive,ractivejs/ractive,Rich-Harris/ractive,ISNIT0/ractive,heavyk/ractive,JonDum/ractive