Glad to see you are making progress. Any chances to commit you work to the repository? 
I need to refresh my local copy of the ABIv11 sources then recompile everything. I will have to get with you when I'm ready to do that in the next few days to make sure I have the right procedure. I'm still a bit new to GitHub procedures.
The revised datatypes are ready to go but the MultiView code will need to be fixed up and cleaned up a bit before submitting. DTConvert GUI is also almost ready to submit after testing.
My updated TGA and PCX datatypes don't compile for ABIv0. The compiler keeps complaining about strange errors. I may need to re-write portions of code for each to make them work.