Release Notes: A bug has been fixed that made the program unnecessarily slow when checking purely numerical answers.
Release Notes: The directory structure for the installed files has been cleaned up; users upgrading from Spotter 2.x will need to move some things around. A bug involving logins has been fixed. The code has been cleaned up.
Release Notes: The program can now check the number of significant figures in the student's answer.
Release Notes: This version fixes a bug involving the rendering of some mathematical expressions on the screen, e.g. a variable named "hbar" no longer causes an error.
Release Notes: This version fixes three bugs. The numerical sampling algorithm uses more samples, making it more robust. A bug has been fixed that made the program give incomplete output in cases where variables were defined, but not given a verbal description, in the XML file. Inverse trig functions are now rendered properly in mathml.
Release Notes: The code has been cleaned up, and server-side performance has been improved by about a factor of three.