Faster phalcon_array_isset()
Use SEPARATE_ZVAL
Faster phalcon_array_unset()
Faster phalcon_array_update_zval()
phalcon_array_fetch() is more consistent with PHP's behavior
Optimized phalcon_array_fetch_quick_string()
Optimized phalcon_array_fetch_long()
Doxygen comments, part 1 [ci skip]
Doxygen comments, part 2 [ci skip]
Merge pull request #822 from sjinks/array-opt

kernel/array.c optimization