Send only minor/major release announces to TIP mailing list
Send only minor/major release announces to TIP mailing list

As discussed recently on the testing-in-python mailing list, people have asked 
to restrict the amount of announcements there only to major/minor 
pytest releases
tgoodlet/pytest,tomviner/pytest,Akasurde/pytest,tareqalayan/pytest,RonnyPfannschmidt/pytest,hpk42/pytest,eli-b/pytest,txomon/pytest,hpk42/pytest,alfredodeza/pytest,jaraco/pytest,nicoddemus/pytest,skylarjhdownes/pytest,tomviner/pytest,davidszotten/pytest,The-Compiler/pytest,The-Compiler/pytest,pfctdayelise/pytest,MichaelAquilina/pytest,etataurov/pytest,malinoff/pytest,hackebrot/pytest,rmfitzpatrick/pytest,vmalloc/dessert,nicoddemus/pytest,pytest-dev/pytest,flub/pytest,ddboline/pytest,markshao/pytest