Different exceptions for different kinds of errors

[msteinbeck]

TS_MALLOC => https://en.cppreference.com/w/cpp/memory/new/bad_alloc
TS_INDEX_ERROR => https://en.cppreference.com/w/cpp/error/out_of_range
TS_U_UNDEFINED => https://en.cppreference.com/w/cpp/error/domain_error
TS_IO_ERROR => custom (e.g. io_error)
Remaining => https://en.cppreference.com/w/cpp/error/invalid_argument

Errors can be mapped to C++ exceptions using a single macro. Swig provides the following exceptions:

bad_alloc => SWIG_MemoryError
out_of_range => SWIG_IndexError
domain_error => SWIG_ValueError
custom (io_error) => SWIG_IOError
invalid_argument => SWIG_ValueError