tox.ini: usedevelop implies skipsdist
tox.ini: usedevelop implies skipsdist

tomviner/pytest,RonnyPfannschmidt/pytest,The-Compiler/pytest,markshao/pytest,Akasurde/pytest,pytest-dev/pytest,tomviner/pytest,nicoddemus/pytest,alfredodeza/pytest,The-Compiler/pytest,nicoddemus/pytest