Add send_group redpack API for WeChatPay. Seems not working for now
Add send_group redpack API for WeChatPay. Seems not working for now

chenjiancan/wechatpy,mruse/wechatpy,tdautc19841202/wechatpy,cloverstd/wechatpy,messense/wechatpy,chenjiancan/wechatpy,hunter007/wechatpy,cloverstd/wechatpy,jxtech/wechatpy,Dufy/wechatpy,tdautc19841202/wechatpy,zhaoqz/wechatpy,hunter007/wechatpy,Dufy/wechatpy,Luckyseal/wechatpy,zhaoqz/wechatpy,navcat/wechatpy,zaihui/wechatpy,navcat/wechatpy,Luckyseal/wechatpy,Luckyseal/wechatpy,EaseCloud/wechatpy,wechatpy/wechatpy,mruse/wechatpy,EaseCloud/wechatpy,zaihui/wechatpy,tdautc19841202/wechatpy