ported tests to Test::More and added some rigours tests which
verify given analytic solutions at various step sizes
one can now access computed values with $o->values_at() which
returns an array of values at a given point
default behaviour changes to retain values internally instead of printing to STDOUT
if no { file => $foo } attribute was given
one can turn off saving computing values in memory with keep_values = 0 in the
arguments to init like
my $ode = new Math::ODE ( file => 'data', keep_values => 0, etc... );
This may be useful if you have a fine mesh size and/or long batch jobs.
$o->evolve() now returns true on success and undefined on numerical error
fixed off-by-one bug in storevalues
added $o->max_error([ $subref1, $subref2 ] ) to calculate maximum error from a
Math::ODE object and an analytic solution, given as an array ref of code refs