New (trivial bug!) Code!
As I suspected, the dot-zero curse hit the 2.0 Discount release, so I’ve had to push out a quick bugfix release today. When I walked through and replaced all the compile time options with runtime options, I managed to reverse the conditional for relaxed emphasis, so that you need to set MKD_NORELAXED or MKD_STRICT to enable relaxed emphasis.
Oops.
Well, here’s version 2.0.1 which reverses the reversed test, plus adds a couple of test cases for a couple of table of contents bugs (one that caused it to generate non-xhtml id= attributes, the other that caused a core dump) and fixed the relaxed emphasis testcases that still assumed that relaxed emphasis was a compile-time option.