add semantic type files to gitignore
add semantic type files to gitignore
darkshadows123/dig-alignment,usc-isi-i2/dig-alignment,darkshadows123/dig-alignment,darkshadows123/dig-alignment,usc-isi-i2/dig-alignment,usc-isi-i2/dig-alignment,darkshadows123/dig-alignment,usc-isi-i2/dig-alignment