v0.3.0

• Introduced parallelize_simple() for parallelization when the user has already assigned a task to each worker. The default behavior can be overridden with the new SUBPAR_CUSTOM_PARALLELIZE_SIMPLE macro.
• Renamed parallelize() to parallelize_range() so that it is more easily distinguished from parallelize_simple(). The overriding macro has been correspondingly renamed to SUBPAR_CUSTOM_PARALLELIZE_RANGE.
• Added a nothrow_ template parameter to skip exception handling when the user knows that the function cannot throw. This also introduces optional NOTHROW versions of the overriding macros.