Bump to v0.4.0.
Bump to v0.4.0.

grzlus/sidetiq,sfroehler/sidetiq,b1tw1se/sidetiq,talentpad/sidetiq,brennovich/sidetiq,danilogcarolino/sidetiq,endofunky/sidetiq,vayu-technology/sidetiq,tobiassvn/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,slategroup/sidetiq,grzlus/sidetiq,kickserv/sidetiq,tobiassvn/sidetiq,akhiln/sidetiq,b1tw1se/sidetiq,rjocoleman/sidetiq,flowerett/sidetiq,vayu-technology/sidetiq,brennovich/sidetiq,akhiln/sidetiq,atpay/sidetiq,PaulMest/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,stanchan/sidetiq,endofunky/sidetiq,slategroup/sidetiq,kickserv/sidetiq,Altonymous/sidetiq,atpay/sidetiq,danilogcarolino/sidetiq,stanchan/sidetiq,PaulMest/sidetiq,talentpad/sidetiq,sfroehler/sidetiq,rjocoleman/sidetiq,flowerett/sidetiq