SweetWater 420 Fest just got even more funky. As if Widespread Panic, Trey Anastasio Band, Slightly Stoopid, Trombone Shorty & Orleans Avenue, Dark Star Orchestra, Anders Osborne, Twiddle, Sister Sparrow & The Dirty Birds and Hip Abduction weren’t heady enough, Atlanta-based SweetWater Brewing Co. and festival producer Happy Ending Productions unveiled the remaining acts for the three-day festival at Centennial Olympic Park April 21-23, 2017. Additional acts include: moe., Talib Kweli, Voodoo…