Make default parameters consistent

This will make things easier to reason about.

Author: yngtodd

examples/darts/advanced/default_model.txt

@@ -1,6 +1,6 @@
 [Global_Params]
 model_name = 'darts_uno'
-unrolled = True
+unrolled = False
 data_url = 'ftp.mcs.anl.gov/pub/candle/public/benchmarks/Pilot1/uno/' 
 savepath = './results'
 log_interval = 10