Hotfix

Fixed an issue exclusive to the Windows build where mouse presses wouldn't get released. The game should no longer pick choices for you for seemingly no reason. Sorry about that, and I will continue to not test anything on Windows.

For anyone interested in more technical explanation: In the X11 (Linux) `event_loop` function the `mouse` variable is reset every frame as I get the current mouse button status with `XQueryPointer` and just shift it to set the `mouse` variable. However in Windows I use `WM_LBUTTONDOWN` etc messages in `window_proc` to set the mouse button bits in `mouse`, which meant that the mouse buttons would never get released with one exception: Wait For User Input (WFUI) keyword does reset `mouse` to prevent it from affecting choices.

Also I might release some kind of documentation for keywords in the future if there is anyone interested in using this terrible "engine" that is HVN.