Add missing keywords for SAS.
Add missing keywords for SAS.

Two changes:
(1) PROC keyword now also includes its associated name (e.g., PROC TABULATE, PROC SQL).
(2) QUIT now included, as it is used to close/complete various procedures.
byverdu/prism,MakeNowJust/prism,Golmote/prism,Golmote/prism,PrismJS/prism,aviaryan/prism,Golmote/prism,PrismJS/prism,byverdu/prism,MakeNowJust/prism,aviaryan/prism,mAAdhaTTah/prism,PrismJS/prism,Golmote/prism,PrismJS/prism,MakeNowJust/prism,CupOfTea696/prism,aviaryan/prism,Golmote/prism,mAAdhaTTah/prism,byverdu/prism,CupOfTea696/prism,CupOfTea696/prism,byverdu/prism,byverdu/prism,aviaryan/prism,mAAdhaTTah/prism,PrismJS/prism,MakeNowJust/prism,CupOfTea696/prism,MakeNowJust/prism,CupOfTea696/prism,aviaryan/prism,mAAdhaTTah/prism,mAAdhaTTah/prism