Add an initial model for testing TU encodings
tree71cc7d1b77edf07cec5e1d9f1007fb81f06de5d7
drwxr-xr-x - latex2e-20150101
drwxr-xr-x - latex2e-20151001
drwxr-xr-x - latex2e-20160201
drwxr-xr-x - latex2e-20160331
drwxr-xr-x - trunk