Change NAMESPACE_BEGIN and NAMESPACE_END macros into PYBIND11_NAMESPACE_BEGIN and PYBIND11_NAMESPACE_END#2283

henryiii merged 4 commits intopybind:masterpybind/pybind11:masterfrom

YannickJadoul:fix-namespace-macro-collisionsYannickJadoul/pybind11:fix-namespace-macro-collisionsCopy head branch name to clipboard