fixed Gini
fixed _eval_args with kwargs in no_eval
added assertions in partition_nd to fail earlier than in the Cython code
fixed Align._add_past_error and renamed "errors" arg to "method"
 renamed _handle_frac_need "frac_need" arg to "method"
 removed align_no_link default values because they are never used and it might be confusing (eg. at that point "expressions" is never None as iit has already been converted to [])
 evaluate manually Align* "expressions" arg