0.9.18.58:

0.9.18.58:
        Further SB-SPROF improvements.

        * Allocation profiling on gencgc. When the profiler is running in
          allocation profiling mode, the gc will signal profiler ticks
          when new allocation regions are opened.
        * Add :LOOP keyword argument to WITH-PROFILING, to allow specifying
          whether the body should be evaluated repeatedly until the maximum
          sample count is reached.
        * Improve merging of code-components with multiple debug-funs,
          better handling of multiple functions with the same name
        * More documentation
        * Also update the stepper documentation