Circle CI: use cache for opam
Circle CI: use cache for opam

ejgallego/coq,maximedenes/coq,ejgallego/coq,maximedenes/coq,ppedrot/coq,maximedenes/coq,letouzey/coq-wip,JasonGross/coq,coq/coq,Zimmi48/coq,letouzey/coq-wip,Zimmi48/coq,JasonGross/coq,ppedrot/coq,JasonGross/coq,JasonGross/coq,silene/coq,maximedenes/coq,ejgallego/coq,ppedrot/coq,SkySkimmer/coq,gares/coq,coq/coq,coq/coq,maximedenes/coq,ejgallego/coq,letouzey/coq-wip,Matafou/coq,gares/coq,Matafou/coq,gares/coq,gares/coq,coq/coq,gares/coq,SkySkimmer/coq,ppedrot/coq,letouzey/coq-wip,Zimmi48/coq,SkySkimmer/coq,Zimmi48/coq,silene/coq,ppedrot/coq,silene/coq,SkySkimmer/coq,letouzey/coq-wip,Matafou/coq