move split_string back to Util
remove unnecessary #include from Util.cpp
Rearrange Param ctors to have name first (rather than last)
Remove regex usage in Generator
Add an option to Generator::emit_filter to have filename not match funcname.
Make GeneratorBase::target public, since that's declared to be best practice for all other GeneratorParams
Generator::get_filter_arguments really needs a body
Add Generator::natural_vector_size()
Add overload to GeneratorParam::'operator !'
Reworked JIT vs AOT tests for Generator
Update CMake for JIT vs AOT Generator tests
Merge branch 'generator' into nested_extern_generator
multiple related generators that call each other in one file

CMake build doesn't work with it yet.