Improved support for overloading unary operators.
Improved support for overloading unary operators.

ChristopherHogan/cython,hhsprings/cython,c-blake/cython,fabianrost84/cython,fabianrost84/cython,cython/cython,mcanthony/cython,mrGeen/cython,mrGeen/cython,da-woods/cython,fperez/cython,cython/cython,mcanthony/cython,fperez/cython,cython/cython,ChristopherHogan/cython,mcanthony/cython,c-blake/cython,hhsprings/cython,fabianrost84/cython,hhsprings/cython,da-woods/cython,da-woods/cython,scoder/cython,hickford/cython,acrispin/cython,fperez/cython,mcanthony/cython,ChristopherHogan/cython,mrGeen/cython,scoder/cython,acrispin/cython,c-blake/cython,fperez/cython,acrispin/cython,hickford/cython,da-woods/cython,acrispin/cython,hickford/cython,hhsprings/cython,c-blake/cython,scoder/cython,mcanthony/cython,acrispin/cython,fabianrost84/cython,hickford/cython,fabianrost84/cython,hhsprings/cython,mrGeen/cython,c-blake/cython,cython/cython,hickford/cython,fperez/cython,scoder/cython,mrGeen/cython