add new ipython magic %pgcli for data exploration
add new ipython magic %pgcli for data exploration

dbcli/pgcli,janusnic/pgcli,darikg/pgcli,w4ngyi/pgcli,suzukaze/pgcli,lk1ngaa7/pgcli,johshoff/pgcli,thedrow/pgcli,bitemyapp/pgcli,dbcli/vcli,dbcli/pgcli,yx91490/pgcli,MattOates/pgcli,MattOates/pgcli,n-someya/pgcli,w4ngyi/pgcli,koljonen/pgcli,bitmonk/pgcli,zhiyuanshi/pgcli,d33tah/pgcli,bitemyapp/pgcli,j-bennet/pgcli,koljonen/pgcli,darikg/pgcli,yx91490/pgcli,thedrow/pgcli,j-bennet/pgcli,lk1ngaa7/pgcli,TamasNo1/pgcli,n-someya/pgcli,nosun/pgcli,TamasNo1/pgcli,zhiyuanshi/pgcli,janusnic/pgcli,nosun/pgcli,dbcli/vcli,bitmonk/pgcli,johshoff/pgcli,d33tah/pgcli,joewalnes/pgcli,joewalnes/pgcli,suzukaze/pgcli