updated changelog, resolve #1539
updated changelog, resolve #1539

nicoddemus/pytest,ddboline/pytest,tomviner/pytest,davidszotten/pytest,hpk42/pytest,txomon/pytest,tgoodlet/pytest,rmfitzpatrick/pytest,etataurov/pytest,Akasurde/pytest,hackebrot/pytest,skylarjhdownes/pytest,malinoff/pytest,MichaelAquilina/pytest,tomviner/pytest,RonnyPfannschmidt/pytest,flub/pytest,eli-b/pytest,alfredodeza/pytest,vmalloc/dessert,hpk42/pytest,The-Compiler/pytest,The-Compiler/pytest,nicoddemus/pytest,tareqalayan/pytest,markshao/pytest,jaraco/pytest,pytest-dev/pytest,pfctdayelise/pytest