It isn't that difficult to do it yourself. If you open the DT_INTS you can see the format used to delineate the different Interrupt Handler SFR locations. I had to add AT_INTS to use the Angular Timer in the PIC16F1615/9. For the PIC18FxxK40s, a few of us went through and totally revamped the DT_INTS-18 to handle them. If you look at the new -18 you can see how allowances were made for older AND newer processors. Personally, I just customize the original for whatever new MCU I'm using.