1.3.1

Mostly fixes for bugs introduced in 1.3.0

• allow Model.eval_uncertainty to be performed with single points for x independent variables (PR #952, Issue #951)

• allow Model._parse_param to handle older-style passed-in 'argnames' and 'kwargs' as for variadic function, add test (PR #950)

• better allow (or re-allow) Model function independent variables / keyword argumentss to be given non-default values at model creation time

• add form as independent variable for builtin Step, Rectangle, Thermal Distribution models.

• use a copy of sys.modules when iterating over it. (#949)

• use Model._reprstring(long=True) for model Model.__repr__().