set_screen_coordinates broken

[osa1]

Code:

extern crate ggez;

use ggez::*;
use ggez::graphics::Rect;

pub fn main() {
    let conf = conf::Conf::new();
    let mut ctx = &mut Context::load_from_conf("foo", "bar", conf).unwrap();
    graphics::set_screen_coordinates(
        &mut ctx,
        Rect{x: 320f32, y: 240f32, w: 640f32, h: 480f32}
    );
}

(the Rect used is taken from the get_screen_coordinates documentation)

Output:

thread 'main' panicked at 'The top corner must be higher than the bottom corner.', /home/omer/.cargo/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.13.1/src/geometry/orthographic.rs:67:8
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:69
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:58
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:397
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:538
   6: <nalgebra::geometry::orthographic::Orthographic3<N>>::new
             at ./<panic macros>:3
   7: nalgebra::core::cg::<impl nalgebra::core::matrix::Matrix<N, nalgebra::core::dimension::U4, nalgebra::core::dimension::U4, <nalgebra::core::default_allocator::DefaultAllocator as nalgebra::core::allocator::Allocator<N, nalgebra::core::dimension::U4, nalgebra::core::dimension::U4>>::Buffer>>::new_orthographic
             at /home/omer/.cargo/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.13.1/src/core/cg.rs:108
   8: <ggez::graphics::GraphicsContextGeneric<ggez::graphics::GlBackendSpec>>::set_projection_rect
             at /home/omer/.cargo/git/checkouts/ggez-ed9d3cec31fdee53/2a0a0c8/src/graphics/mod.rs:612
   9: ggez::graphics::set_screen_coordinates
             at /home/omer/.cargo/git/checkouts/ggez-ed9d3cec31fdee53/2a0a0c8/src/graphics/mod.rs:867
  10: mong::main
             at src/main.rs:106
  11: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:99
  12: std::rt::lang_start
             at /checkout/src/libstd/panicking.rs:459
             at /checkout/src/libstd/panic.rs:361
             at /checkout/src/libstd/rt.rs:59
  13: main
  14: __libc_start_main
  15: _start

[icefoxen]

Definitely related to #134 , yes.