Added error-threshold to Vector Average problem
Added error-threshold to Vector Average problem

Vaguery/Clojush,NicMcPhee/Clojush,Vaguery/Clojush,thelmuth/Clojush,saulshanabrook/Clojush,NicMcPhee/Clojush,thelmuth/Clojush,lspector/Clojush,lspector/Clojush,saulshanabrook/Clojush