rpn 5.16.alpha4

Added support for lists and units.

c:\>rpn [ 1 10 range days ]
[ 1 day, 2 days, 3 days, 4 days, 5 days, 6 days, 7 days, 8 days, 9 days,
10 days ]

'sum' now supports units.

c:\>rpn [ 1 hour 2 day 600 minutes ] sum
59 hours

c:\>rpn [ 1 10 range days ] sum
55 days