Finalize CHANGELOG
Finalize CHANGELOG

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