Updates CHANGELOG.md through 1.3.8
Updates CHANGELOG.md through 1.3.8

sergii-tkachenko/phoenix,sbsmith86/dosomething,sergii-tkachenko/phoenix,sbsmith86/dosomething,chloealee/dosomething,deadlybutter/phoenix,DoSomething/phoenix,DoSomething/dosomething,chloealee/dosomething,sergii-tkachenko/phoenix,DoSomething/phoenix,mshmsh5000/dosomething-1,mshmsh5000/dosomething-1,chloealee/dosomething,chloealee/dosomething,deadlybutter/phoenix,angaither/dosomething,deadlybutter/phoenix,angaither/dosomething,sbsmith86/dosomething,angaither/dosomething,DoSomething/phoenix,deadlybutter/phoenix,chloealee/dosomething,DoSomething/phoenix,mshmsh5000/dosomething-1,mshmsh5000/dosomething-1,sbsmith86/dosomething,DoSomething/dosomething,mshmsh5000/dosomething-1,DoSomething/dosomething,sbsmith86/dosomething,sergii-tkachenko/phoenix,deadlybutter/phoenix,DoSomething/dosomething,sbsmith86/dosomething,angaither/dosomething,sergii-tkachenko/phoenix,DoSomething/phoenix,DoSomething/dosomething,chloealee/dosomething,DoSomething/dosomething,angaither/dosomething,angaither/dosomething