Add methods #relation_pull, #relation_push, and rename #mongoid4? to #mongoid_4 for consistency
Add methods #relation_pull, #relation_push, and rename #mongoid4? to #mongoid_4 for consistency

kayakyakr/mongoid_alize,burgalon/mongoid_alize,bezugen/mongoid_alize,pranav-g10/mongoid_alize,pranav-g10/mongoid_alize