Changes file for Math::JS

0.04
 - The overloading of '""' (stringification of values held by Math::JS
   objects) now automaticaly utilizes Math::Ryu if version 0.06 or later
   of that module is found. Otherwise, sprintf(%.17g, ...) is still used.

0.03
 - Provide sub urs() to perform unsigned 32-bit right shift as per
   JavaScript's '>>>' operator.
 - Overload '%' operator to mimic JS '%' operation (by wrapping C's fmod
   function).
 - Add new test files t/switch_args.t, t/inc_dec.t.

0.02
 - Avoid dealing with buggy floating-point assignments by not supporting
   perls older than 5.30.
 - Address portability issues regarding is_ok().

0.01
 - first release.