Adds preliminary includes ('\i') functionality.
Adds preliminary includes ('\i') functionality.

koljonen/pgcli,n-someya/pgcli,dbcli/pgcli,suzukaze/pgcli,johshoff/pgcli,n-someya/pgcli,darikg/pgcli,zhiyuanshi/pgcli,yx91490/pgcli,suzukaze/pgcli,janusnic/pgcli,d33tah/pgcli,yx91490/pgcli,darikg/pgcli,dbcli/vcli,koljonen/pgcli,joewalnes/pgcli,lk1ngaa7/pgcli,w4ngyi/pgcli,TamasNo1/pgcli,joewalnes/pgcli,dbcli/pgcli,dbcli/vcli,johshoff/pgcli,zhiyuanshi/pgcli,w4ngyi/pgcli,lk1ngaa7/pgcli,d33tah/pgcli,janusnic/pgcli,TamasNo1/pgcli