September Newsletter

Reopening so I can merge with GitHub as soon as I finish it.

This might be confusing because Vim's implementation for Windows certainly works. Suggestion:

> The temp file/directory creation routine in Neovim needed some features that weren't available in libuv. Neovim contributor @Hinidu sent a pull request to libuv which added a new function `uv_fs_mkdtemp`. The changes (now part of libuv [version 0.11.27][temp-version]) are used by Neovim to provide temporary file/directory creation in a cross-platform manner. Because the cross-platform code was contributed to libuv, other libuv-based projects can benefit from the code.

Reword as you see fit.