Modified the 'from-string' instruction to properly handle different cases and return :no-stack-item when appropriate. Additionally, modified several PSB2 problems to remove the parsed-outputs section. Since the output came from the string stack, parsing them actually returned unhelpful things at times. For example, using 'read-string' on "+1" will only return 1.
Modified the 'from-string' instruction to properly handle different cases and return :no-stack-item when appropriate. Additionally, modified several PSB2 problems to remove the parsed-outputs section. Since the output came from the string stack, parsing them actually returned unhelpful things at times. For example, using 'read-string' on "+1" will only return 1.