Add set_defaults! and set_overrides! Dataset mutation methods
Add set_defaults! and set_overrides! Dataset mutation methods

nicohvi/sequel,freshpay/sequel,beni55/sequel,gferguson-gd/sequel,seeARMS/sequel,seeARMS/sequel,bigfix/sequel,knut2/sequel,nju520/sequel,nju520/sequel,pfarrell/sequel,mpalmer/sequel,dennis-d/custom_sequel,t-morgan/sequel,davidbegin/sequel,yazshel/sequel,offshore-safety/sequel,uhoh-itsmaciek/sequel,beni55/sequel,gferguson-gd/sequel,Marketcircle/sequel,uhoh-itsmaciek/sequel,yazshel/sequel,mpalmer/sequel,knut2/sequel,freshpay/sequel,offshore-safety/sequel,offshore-safety/sequel,dennis-d/custom_sequel,chef/sequel,pfarrell/sequel,tmm1/sequel,davidbegin/sequel,nicohvi/sequel,reubano/sequel,reubano/sequel,t-morgan/sequel